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Your search returned over 400 essays for "rate of photosynthesis"
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Effects of CO2 Concentration on the Rate of Photosynthesis - Effects of CO2 Concentration on the Rate of Photosynthesis Whenever there is an increase of CO2 in the atmosphere, plants respond by reducing stomatal conductances, hence, water loss is reduced. This result in greater soil moisture content in ecosystems rich with CO2, this increases plant growth In a review of studies conducted over the prior decade, Pospisilova and Catsky (1999) compiled over 150 individual plant water use responses to atmospheric CO2 enrichment. They found that elevated CO2 increased rates of net photosynthesis in about 85% of the reported studies, while reducing stomatal conductances and rates of transpiration in approximately 75% of the cases analyzed....   [tags: transpiration, environment, ecosystems]
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889 words
(2.5 pages)
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Rate of Photosynthesis - Rate of Photosynthesis Aim Plants take in carbon dioxide and realise oxygen using photosynthesis so I am trying to determine the rate of photosynthesis. In this experiment I will investigate how sodium hydrogen carbonate affects the rate of photosynthesis. Apparatus Needed ---------------- ü Glass Funnel ü Desk lamp ü 1 Litre Beaker ü Test tube ü Aquatic Plant (Canadian Pond weed) ü A ball of plasticine ü Sodium Hydrogen Carbonate ü Razor Blade ü Bench lamp with a 40W bulb ü 30cm wooden ruler ü Clock ü Stirring rod Using the Apparatus...   [tags: Papers] 831 words
(2.4 pages)
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Rate of Photosynthesis and How It Varies - Rate of Photosynthesis and How It Varies There are several things which need to be taken into account which can cause the rate of photosynthesis to change. A) sunlight concentration B) temperature C) chlorophyll concentration D) carbon dioxide availability Effects of the variables and there concentrations: The amount of sunlight will decide the rate of photosynthesis as there will be a an increased rate of photosynthesis due to the increased availability of photons of light....   [tags: Papers] 633 words
(1.8 pages)
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Experiment to Show the Rate of Photosynthesis - Experiment to Show the Rate of Photosynthesis Aim: Experiment to show the rate of photosynthesis when pondweed is under different life intensities. Prediction: I predict that the closer the light is to the pondweed the (or the higher the light intensity) the more oxygen will be produced until a certain point where the temperature or carbon dioxide levels will be the limiting factor. The further away the light, the slower the oxygen bubbles will be produced so the less light the less photosynthesis will occur which is needed for the plant to make food....   [tags: Papers] 648 words
(1.9 pages)
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The Rate of Photosynthesis in Chloroplasts - The Rate of Photosynthesis in Chloroplasts Introduction: This experiment was done to test the hypothesis: Boiling and decrease in light will have negative affects on the rate of photosynthesis in chloroplasts. In this experiment we were told that we would be measuring the rate of photosynthesis. The reduction of a dye called DPIP is a part of the measurement technique. The transfer of electrons during the light-dependent reactions of photosynthesis reduce DPIP, changing it from light blue to colorless....   [tags: Papers] 803 words
(2.3 pages)
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Speeding up the Rate of Photosynthesis - Speeding up the Rate of Photosynthesis Outline: The aim of my experiment is to find a factor that will speed up the rate of photosynthesis. Photosynthesis need light to work, so light therefore should speed up the rate of photosynthesis. I will do an experiment to see if this works. I will place a piece of cut pondweed into a beaker containing water and sodium hydrogen carbonate. A lamp will be shined on to the pondweed and the amount of bubbles released from the plant will be counted....   [tags: Papers] 651 words
(1.9 pages)
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Rate of Photosynthesis in Pond-Weed - Rate of Photosynthesis in Pond-Weed Plan The aim of this activity is to investigate one of the factors that affect the rate of photosynthesis in pond-weed. I am trying to find out if the distance of the pond-weed from a lamp will change the rate of photosynthesis. I will measure the rate of photosynthesis by counting the number of bubbles that are released by the stem of the pond-weed when the lamp is shone on it from different distances. What I think will happen is as the pond weed is moved further away from the lamp, less bubbles will be produced....   [tags: Papers] 833 words
(2.4 pages)
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How carbon dioxide can affect the rate of photosynthesis - Aim: To investigate how carbon dioxide can affect the rate of photosynthesis. Hypothesis: The rate of photosynthesis in the water plant hydrilla will change as the rate of carbon dioxide changes. Background information: Photosynthesis Photosynthesis is the process of autotrophs turning carbon dioxide and water into carbohydrates and oxygen, using light energy from sunlight. Autotrophs are organisms that are able to produce nutrients and organic compounds using inorganic materials. Examples of autotrophs are green plants, algae, bacteria, etc....   [tags: science project] 1921 words
(5.5 pages)
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Measuring the Rate of Photosynthesis - Measuring the Rate of Photosynthesis Plan I am going to investigate the factors that affect the rate of photosynthesis, these factors are: * CO2 * Colour of the light * Temperature * Distance from the lamp to the pondweed * Size of the pondweed * Type of pondweed We could measure and observe the way these factors affect the pondweed by looking at: * The amount of air bubbles formed per minute * The distance from the lamp to the pondweed * The amount of pondweed * The temperature of the water * How much water is lost * The condition of the pondweed I am going to change the different colours of the l...   [tags: Papers] 1224 words
(3.5 pages)
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Investigating the Factors that Affect the Rate of Photosynthesis - Investigating the Factors that Affect the Rate of Photosynthesis Aim: I will be investigating how light intensity affects the rate of photosynthesis, whether it decreases or increases the rate of photosynthesis. Background Knowledge: Photosynthesis is the process by which plants make their own food. For photosynthesis to occur, plants need: · Light energy from the sun · Chlorophyll to absorb light energy · Carbon dioxide from the atmosphere and from respiration in plant cells · Water which is absorbed by the roots and transported to the leaves by the xylem tubes....   [tags: Papers] 1223 words
(3.5 pages)
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Investigating Factors That Affect the Rate of Photosynthesis - Investigating Factors That Affect the Rate of Photosynthesis INTRODUCTION All green plants use raw materials from their surrounding atmosphere to make their own food. They do this by a process called Photosynthesis. Green plants contain many tiny structures called Chloroplasts and these contain a chemical called Chlorophyll. This chemical is a very important part of Photosynthesis, as this is where the plant, to produce its own food, absorbs sunlight. Photosynthesis mainly takes place in the Palisade Mesophyll cells, which are situated near the top of the leaf....   [tags: Papers] 1611 words
(4.6 pages)
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The Effect of Light Intensity on the Rate of Photosynthesis - The Effect of Light Intensity on the Rate of Photosynthesis Introduction Green plants don't exude food from the soil they make their own, using sunlight. This is called photosynthesis, which means "making through light". This occurs in the cells of a green plant, which are exposed to sunlight. Four things are needed to make this process work and this gives two thing: the four things needed are light from the sun, carbon dioxide diffuses from the air, water from the soil and chlorophyll in the leaves....   [tags: Papers] 1311 words
(3.7 pages)
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The Effect of Light Intensity on the Rate of Photosynthesis - The Effect of Light Intensity on the Rate of Photosynthesis Experiment: An experiment to investigate the effect of light intensity on the rate of photosynthsis. Aim: We will be trying to see if light intensity has an effect on the rate of photosynthsis. Introduction: Photosynthesis is the process that produces 'food' for plants, this 'food' is called glucose. The process takes place in the leaves of green plants, this is what the leaves are for. There are four things that are required by the plant before it can carry out photosynthesis, they are light, chlorophyll, carbon dioxide and water ....   [tags: Papers] 441 words
(1.3 pages)
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The Effect of Light Intensity on the Rate of Photosynthesis - The Effect of Light Intensity on the Rate of Photosynthesis Plan: Aim: To investigate the affect of light intensity on the rate of photosynthesis. Theory: Before I predict what will happen I must look at how photosynthesis occurs. Photosynthesis is the way plants create a source of food for themselves. Photosynthesis requires the following resources; Carbon Dioxide, Water and light. Inside the leaves of a plant there is a green substance, this substance is known as chlorophyll....   [tags: Papers] 531 words
(1.5 pages)
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The Effect of Light Intensity and Temperature on the Rate of Photosynthesis - The Effect of Light Intensity and Temperature on the Rate of Photosynthesis Aim The aim of my experiment is to determine whether intensity of light and temperature would affect the rate of photosynthesis in a plant. To do this, I will place a piece of pondweed in varying light intensities and temperatures, and observe the amount of oxygen being given off. I am using pondweed because of its unusual quality of giving off bubbles of gas from a cut end, when placed in water. Introduction Photosynthesis occurs only in the presence of light, and takes place in the chloroplasts of green plant cells....   [tags: Papers] 2128 words
(6.1 pages)
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An Experiment to Investigate the Effect of Light Intensity on the Rate of Photosynthesis - An Experiment to Investigate the Effect of Light Intensity on the Rate of Photosynthesis Introduction Photosynthetic takes place in the chloroplasts of green plant cells; it can produce simple sugars using carbon dioxide and water causing the release of sugar and oxygen. The chemical equation of photosynthesis is: [IMAGE]6CO2 + 6H20 C6 H12 O6 + 6O2 it has been proven many times that plants need light to be able to photosynthesize , so you can say that without light the plant would neither photosynthesize or survive....   [tags: Papers] 970 words
(2.8 pages)
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Investigating Factors that Affect the Rate of Photosynthesis in Elodea - Investigating Factors that Affect the Rate of Photosynthesis in Elodea Aim: To find out which factors affect the rate of photosynthesis in Elodea. Variables: The variables that might affect the rate of photosynthesis in this experiment are: Temperature: When the temperature rises so does the rate of photosynthesis; this is because as the temperature around the plant rises the enzymes controlling photosynthesis inside the chloroplasts heat up and start moving around faster, the fast moving molecules collide with other fast moving enzymes causing them to react....   [tags: Papers] 2099 words
(6 pages)
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The Effect of Light Intensity on the Rate of Photosynthesis in an Aquatic Plant - The Effect of Light Intensity on the Rate of Photosynthesis in an Aquatic Plant Introduction The input variable I will be investigating is light, as light is just one of the 4 factors required in the green-plant process of photosynthesis. Photosynthesis is the process by which green-plants use sunlight, carbon dioxide, water & chlorophyll to produce their own food source. This process is also affected by the temperature surrounding the plant (the species of plant we experimented with, pond weed, photosynthesised best at around 20 degrees centigrade.) Light, temperature & CO2 are known as limiting factors, and each is as important as the next in photosynthes...   [tags: Papers] 4194 words
(12 pages)
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Does raising the light intensity increase the rate of photosynthesis? - Does raising the light intensity increase the rate of photosynthesis. Aim: To see if raising the light intensity increases the rate of photosynthesis. Prediction:I predict that raising the light intensity will increase the rate of photosynthesis. I think this because light is the most important thing needed for photosynthesis. I then think that the rate of photosynthesis will stay the same when it reaches a certain point. I think this because the plant may use up all of the carbon dioxide (Sodium hydro carbonate) and the plant can have as much light as it needs but if it does not have any carbon dioxide it will not be able to photosynthesise....   [tags: Biology] 940 words
(2.7 pages)
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The Relationship Between Light Intensity and the Rate of Photosynthesis - The Relationship Between Light Intensity and the Rate of Photosynthesis Investigate the relationship between light intensity and the rate of photosynthesis. Photosynthesis is important because animals eat food, as it is a source of energy. All living things need a constant supply of energy if they are to grow, reproduce or move. Plants do not eat food but they do have some in the form of starch in their leaves. The symbol equation for photosynthesis is: 6 CO2+6 H2O-light C6 H12 06+6 02....   [tags: Papers] 826 words
(2.4 pages)
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biology - how light intensity affects the rate of photosynthesis - Biology Coursework ¡V Does The Light Intensity Affect the Rate of Photosynthesis The Investigation In this experiment I will investigate the affect in which the light intensity will have on a plants photosynthesis process. This will be done by measuring the bubbles of oxygen and having a bulb for the light intensity variable. Variables The input variable which will be used in this investigation will be the light intensity (this will be a 100Watt bulb being moved closer and further away from the plant)....   [tags: essays research papers] 2109 words
(6 pages)
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Investigating the Link Between Wavelength of Light and Rate of Photosynthesis - Investigating the Link Between Wavelength of Light and Rate of Photosynthesis PROBLEM ======= I have been asked to investigate the link between wavelength of light and rate of photosynthesis. HYPOTHESIS ========== I predict that the order of best absorption in a plat to produce more bubbles will be blue, yellow, orange, red and finally green. I predict this because blue has the shortest wavelength which produces the most energy and there is slightly higher absorption in the blue region by the plant....   [tags: Papers] 1105 words
(3.2 pages)
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How Does Light Affect The Rate Of Photosynthesis? - Biology Investigation Problem: How does light affect the rate of Photosynthesis. The Plan In my experiment I am going to see how light affects the rate of photosynthesis. To do this experiment I am going to set up the apparatus as shown in figure 1. The apparatus I am going to use are the following: - 1 Tripod 1 300ml Beaker 1 Boiling Tube 1 Clamp Stand 1Clamp 1 Boss 1 Ring Binder 1 Lamp 1 1 Metre Ruler 1 Thermometer 1 Stop Clock To do the experiment I will set up the apparatus first. I will firstly place the tripod on top of the base of the clamp stand and fill the 300ml beaker with 250ml of water to create the water bath....   [tags: essays research papers] 1855 words
(5.3 pages)
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Investigating the Effect of Light Wavelength on the Rate of Photosynthesis - Investigating the Effect of Light Wavelength on the Rate of Photosynthesis Plan ==== Method Take a 250cm3 beaker and fill it with distilled water. Use distilled water so there are no impurities to disrupt photosynthesis. Then take x cm's of elodia and put it in the beaker. Cover the elodia with the large end of a funnel and the tip of the funnel cover with a test tube. Then direct a light onto this experiment. Measure the amount of bubbles that come from the elodia for x minutes....   [tags: Papers] 348 words
(1 pages)
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Investigating the Effects of Sodium Concentrations Have on the Rate of Photosynthesis - Investigating the Effects of Sodium Concentrations Have on the Rate of Photosynthesis Aim: To investigate the effects that different concentrations of sodium hydrogen carbonate on the rate of photosynthesis. Plan: Background Research ------------------- Photosynthesis Equation: Light energy & chlorophyll [IMAGE]6CO2 + 6H2O C6H12O6 + 6O2 ================================ Factors ======= The resistance of a wire depends on certain factors. Some of these variables are listed below: · Light Wavelength · Carbon Dioxide (sodium hydrogen carbonated) · Temperature · Water All these factors will have to be kept constant except the...   [tags: Papers] 605 words
(1.7 pages)
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The Effect of Wavelength on Photosynthesis Rate - The Effect of Wavelength on Photosynthesis Rate Aim: To investigate how different wavelength (colors) of light affect the photosynthetic rate. I will use a pant that is a pond weed called elodea. I will measure the rate of photosynthesis by measuring the amount of o2 given off in bubbles per minuet from the elodea. I will do this by placing the Elodea in a test tube with sodium hydrogen carbonate then I will vary the light wavelength (color) using colored filters and count the number of oxygen bubbles given off using a pencil dot technique....   [tags: Papers] 1354 words
(3.9 pages)
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An Investigation into the Effect of Light Intensity on the Rate of Photosynthesis on a Piece of Elodea - An Investigation into the Effect of Light Intensity on the Rate of Photosynthesis on a Piece of Elodea Plan: Method: 1) First I will put some water into a boiling tube and add 5 spatulas of Sodium Hydrogen Carbonate. I will add 5 spatulas of Sodium Hydrogen Carbonate as it reacts with water and forms carbon dioxide; also I have so much so that I have carbon dioxide in excess. 2) Then I will cut off 5cm of elodea and place it into the boiling tube. 3) Thirdly I will place the boiling tube in a test tube holder 5cm in front of the light source....   [tags: Papers] 1510 words
(4.3 pages)
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The Effect of Light Intensity on the Rate of Oxygen Production in a Plant While Photosynthesis is Taking Place - The Effect of Light Intensity on the Rate of Oxygen Production in a Plant While Photosynthesis is Taking Place Hypothesis: I predict that as the intensity of light is increased, so would the photosynthesis. Furthermore, I predict that if the light intensity increases, the rate of photosynthesis will increase at a proportional rate and more oxygen will be produced and therefore the oxygen levels will increase. However, the lower the light intensity, less oxygen will be produced which would affect this investigation....   [tags: Papers] 512 words
(1.5 pages)
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The Effect of Absorption Rate on Light and Dark Colored Leaves - The Effect of Absorption Rate on Light and Dark Colored Leaves. A particular leaf color may have an effect on the leaf’s absorption rate. An experiment was conducted to determine the relationship between a leaf’s absorption rate and color. A group of students tested spinach, cabbage, and no chloroplast solutions to determine the relationship it has with the absorption rate. It was found that darker colored leaves have a higher absorption rate than lighter colored leaves when analyzed from the graphs....   [tags: sunlight, chlorophyll, photosynthesis]
:: 6 Works Cited
1006 words
(2.9 pages)
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An Experiment with Photosynthesis - ... Materials and Methods The materials and methods used were from the University of Adelaide MGC Practical 4 Photosynthesis (2014). The rate of photosynthesis was recorded at a range of light Intensities and conditions. Data was first recorded at 800-μmol photons m-2 s-1 with no carbon dioxide. Sodium Bicarbonate was then added to the oxygen electrode. The rate of photosynthesis was measured at 4 other light intensities of 80, 350, 150, 60 and 0-μmol photons m-2 s-1. When data had been recorded at 0-μmol photons m-2 s-1, 200mM of Diuron was added at full light (800-μmol photons m-2 s-1)....   [tags: oxygen, energy, findings] 539 words
(1.5 pages)
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Light and Photosynthesis - Introduction. Light is a very important factor in the rate of photosynthesis, in my project I am going to test that plants do need light in order to photosynthesise. It will be very interesting to see how light will influence the rate of photosynthesis in plants and what will happen if they do not get the required light in order to produce starch . The plant I have chosen to do is a Geranium which is a dicotyledonous plant found in the dry and hot regions of South Africa. Aim To see whether light effects the rate of Photosynthesis in plants or not....   [tags: plant, sun, greranium]
:: 3 Works Cited
1268 words
(3.6 pages)
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Light as a Raw Material of Photosynthesis - Photosynthesis is the process of making glucose using the raw materials water, carbon dioxide and radiant energy. Which is trapped by the chlorophyll molecules and then oxygen is given off as a bi-product if the process. It is the conversion of radiant energy into chemical potential energy. The occurrence of photosynthesis is very important to us as humans, because it provides us with the oxygen we need to breathe and plants are at the bottom of every food-chain and so without them, I would collapse....   [tags: radiant energy, chlorophyll, glucose]
:: 3 Works Cited
1377 words
(3.9 pages)
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The Influence of Light on Photosynthesis - The influence of light on Photosynthesis Table of contents Front page and table of contents Page 1 Introduction Page 2 Review of literature Page 3 and 4 Methodology and presentation of findings Page 5 and 6 Procession of findings Page 7 Conclusion Page 8 Introduction In this project I believe the outcome will be that light energy is essential for photosynthesis to occur. The aim was to show that light is necessary for photosynthesis. Photosynthesis is the process of converting light energy into chemical potential energy and storing it as starch....   [tags: experiment, plants, energy] 1491 words
(4.3 pages)
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Carbon Dioxide Experiment in Photosynthesis - Without carbon dioxide plants cannot photosynthesize. Through reading various books and web pages it was made clear that carbon dioxide is definitely one of the raw materials needed for photosynthesis, but I wanted to see whether this is actually true and if carbon dioxide is taken away completely will the plant photosynthesize at all. By taking a two plants of the exact same species, de-starching them both followed by putting plant one in conditions where carbon dioxide is taken away completely, and plant two will then be put in conditions where carbon dioxide is added, after a day or two in these conditions leaves from both plants will be tested for starch, if the leaf tests positive for...   [tags: plant, energy, oxygen] 1321 words
(3.8 pages)
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The Importance of Light During the Photosynthesis Process - Photosynthesis is a chemical process by which green plants use the radiant energy to synthesize certain nutrients using water and carbon dioxide. This process to happen efficiently it requires the presence of light, water carbon dioxide, chlorophyll and enzymes. During the process of photosynthesis, carbon dioxide plus water in the presence of sunlight, enzymes and chlorophyll produce glucose and oxygen as waste product. The radiant energy is broken down the water into hydrogen atom and oxygen atoms, these atoms combine with carbon dioxide to make glucose and oxygen....   [tags: green plants, chlorophyll, radiant energy]
:: 5 Works Cited
1722 words
(4.9 pages)
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The Effect of Light on Photosynthesis - The Effect of Light on Photosynthesis Plants need and use the same light of foods as animals but while animals have to eat other things to get their food, plants make it themselves. The way they do this is called photosynthesis. The other ways that plants are different from animals, such as having leaves and root or being green, they are all linked with photosynthesis. In photosynthesis, plants take carbon dioxide from the air and water from the soil, and use the energy from the sunlight to convert them into food....   [tags: Papers] 969 words
(2.8 pages)
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The Effect of Light on Photosynthesis - The Effect of Light on Photosynthesis Aim:My aim was to investigate how light affected photosynthesis. Prediction:My prediction is that the closer the weed is to the light the faster the photosynthesis as light acts as a catalyst which speeds it up. Bibliography: For my work I used the internet and certain science books for info. Hypothesis:Photosynthesis is a process by which green plants and certain other organisms use the energy of light to convert carbon dioxide and water into the simple sugar glucose....   [tags: Papers] 625 words
(1.8 pages)
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Light Intensity's Effect on Photosynthesis - Light Intensity's Effect on Photosynthesis Aim : To find out how light intensity will affect the rate of photosynthesis in a piece of Canadian Pondweed. Prediction : I predict that as I increase the distance between the light source and the Canadian Pondweed (reducing the light intensity), the volume of oxygen produced within the time limit (the measure of the rate of photosynthesis) will decrease. This will happen because as the light source is moved further away, less light rays will reach the surface of the Pondweed, shown by this diagram; [IMAGE] [IMAGE] [IMAGE][IMAGE][IMAGE][IMAGE][IMAGE][IMAGE][IMAGE][IMAGE][IMAGE] Light source [IMAGE][IMAGE...   [tags: Papers] 3525 words
(10.1 pages)
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The Adaptations of Green Plants for Photosynthesis - The Adaptations of Green Plants for Photosynthesis Photosynthesis is the metabolic pathway by which the inorganic compounds water and carbon dioxide are converted into carbohydrates using light energy, which is absorbed by chlorophyll. Plants need to be adapted so that maximum light energy is absorbed and therefore maximum photosynthesis occurs. Plants have adapted in order to be able to survive in many different climates such as high temperatures and humid conditions. Leaves play an important part in photosynthesis, as they are the first part of the plant, which is exposed to the light energy from the sun....   [tags: Free Essays] 400 words
(1.1 pages)
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Investigating Photosynthesis in Canadian Pondweed - Investigating Photosynthesis in Canadian Pondweed Aim The aim of the investigation is find out what factors affect the rate of photosynthesis. Photosynthesis should not occur if one of the limiting factors is not present. Plan ==== The factors affecting photosynthesis are: Light - This will affect photosynthesis because it is one of the limiting factors. Without light photosynthesis can't take place as it is the energy source. Temperature - This will affect photosynthesis because plants will photosynthesise at a quicker rate at different temperatures....   [tags: Papers] 872 words
(2.5 pages)
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The Effect of Photosynthesis and Respiration on the Environment - The Effect of Photosynthesis and Respiration on the Environment The environment can be defined as the surroundings in which as organism lives, including the climate, the physical and chemical conditions of its habitat and its relationship with other living things. Given the above understanding, it is therefore important that the right environment factors are in existence for some chemical reactions to take place. In the absence of optimum environmental factors, organisms would be compelled to adapt themselves to the prevailing environment....   [tags: Papers] 1233 words
(3.5 pages)
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Photosynthesis - Photosynthesis Photosynthesis produces energy in the form of glucose it uses water from the soil, carbon dioxide from the air, and energy from the suns light. Photosynthesis takes place in all plants that contain chlorophyll. Photosynthesis mainly takes place in the palisade mesophyll cell in the leaves of plants. The main reaction is to produce oxygen and glucose, glucose is stored in the form of starch and does not affect osmosis, taking place in the plant. As plants respire both night and day this starch is often used up during the night when photosynthesis cannot take place....   [tags: Papers] 708 words
(2 pages)
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photosynthesis - Photosynthesis Investigation to find effects of distance of a light source from pond weed has on the amount of oxygen produced Photosynthesis All green plants need to be able to make their own food.They do this by a process called photosynthesis.For photosynthesis to occur they need sunlight energy.This energy is absorbed by a green pigment called chlorophyll,which is mainly found in the leaves.This energy then combinEs with water molecules (from the soil) and carbon dioxide (from the air).Then as a result of this,a type of sugar is produced .This is called glucose.Also oxygen is made....   [tags: essays research papers] 878 words
(2.5 pages)
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photosynthesis - Organisms Depend Upon Photosynthesis A. Organisms Depend Upon Photosynthesis 1. Photosynthetic organisms (algae, plants and a few other organisms) serve as ultimate source of food for most life. 2. Photosynthesis transforms solar energy into chemical bond energy of carbohydrates. 3. Most food chains start with photosynthesizers. Solar Radiation Key Discoveries of Photosynthetic Process Structure of Chloroplasts Function of Chloroplasts A. Solar Radiation 1. Solar radiation is described in terms of its energy content and its wavelength....   [tags: essays research papers] 1816 words
(5.2 pages)
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Photosynthesis Investigation - Photosynthesis Investigation Investigate the affect of light on the rate of photosynthesis of a piece of pondweed I am going to investigate how light will affect the rate of photosynthesis of pondweed. I predict that as the light becomes less intense, I do this by moving the light away from the pondweed, the rate of photosynthesis will decrease. The formula for photosynthesis is: [IMAGE] 6CO2 + 6H2O C6O12H6 + 6O2 [IMAGE] Carbon Dioxide + Water Glucose + Oxygen There are 3 major factors that limit the rate of photosynthesis, these are: · Temperature · Amount of Carbon Dioxide · Light Intensity The only factor that we are able t...   [tags: Papers] 546 words
(1.6 pages)
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Photosynthesis Practical - Photosynthesis Practical Introduction- Photosynthesis is the chemical process, which takes place in every green plant to produce food in the form of glucose. Plants use the suns energy to join together water and carbon molecules to make the glucose, which is sent around the plant to be used in respiration. 6CO + 6H O ® C H O + 12O (in the presence of light energy and chlorophyll) Aim- The aim of the experiment is to determine what effect light intensity has upon the rate of photosynthesis of Canadian Pondweed (Elodea)....   [tags: Papers] 1289 words
(3.7 pages)
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Determining the Effect of Light Intensity on Photosynthesis - Determining the Effect of Light Intensity on Photosynthesis Aim In this experiment, I intend to alter the light intensity and measure its effect on photosynthesis through the production of oxygen Introduction Photosynthesis is the process by which green plants provide a source of energy for respiration. The formula is as follows- Carbon dioxide + water Carbon dioxide and water are chemically combined to produce glucose (the energy source) and oxygen (a waste product)....   [tags: Papers] 1671 words
(4.8 pages)
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The Limiting Effect of Light Intensity on Photosynthesis - The Limiting Effect of Light Intensity on Photosynthesis Aim: To investigate the limiting effect of light intensity on photosynthesis. Prediction: I predict that as the light source (desk lamp) is moved closer to the pondweed (Elodea), the rate of photosynthesis will increase therefore more oxygen will be produced creating more bubbles. I believe this will happen because when the light source is nearer to the plant more of the plants surface area is coming in to contact with the light from the desk lamp therefore more photosynthesis will occur which will mean more oxygen will be produced which will create more bubbles....   [tags: Papers] 613 words
(1.8 pages)
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Photosynthesis in Relation to Light, Temperature and Water - Photosynthesis in Relation to Light, Temperature and Water Light has three principal characteristics that affect plant growth: quantity, quality, and duration. Light quantity refers to the intensity or concentration of sunlight and varies with the season of the year. The maximum is present in the summer and the minimum in winter. The more sunlight a plant receives (up to a point), the better capacity it has to produce plant food through photosynthesis. As the sunlight quantity decreases the photosynthetic process decreases....   [tags: Papers] 1152 words
(3.3 pages)
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Different wavelengths of light affect on photosynthesis rates in tomato plants - Background Information: The leaves of a plant are the main photosynthetic organs and are involved in gas exchange and water transportation throughout a plant (Evans et al, 17). A leaf typically consists of an upper and lower epidermis, the mesophyll cells, veins, guard cells and stomata. The mesophyll cells contains spongey cells which have large gaps between each cell to allow oxygen and carbon dioxide circulation. The mesophyll cells contain palisade cells, which are located beneath the upper epidermis....   [tags: Experiment Analysis]
:: 8 Works Cited
2609 words
(7.5 pages)
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An Experiment to Show the Relation Between Light Intensity and Photosynthesis - An Experiment to Show the Relation Between Light Intensity and Photosynthesis Introduction Photosynthesis takes places in the leaves of plants, mostly in the palisade layer of the leaf. Photosynthesis is the plants way of creating energy for itself(sugar), for growth, repair, storage and energy production. The test will be to find out the relationship between light intensity (voltage) and the rate of photosynthesis. Photosynthesis is: Carbon dioxide + water + sunlight ---> oxygen + carbohydrate + water Or 6CO2 + 12H2O + sunlight ---> 6O 2 + C6 H12O 6 + 6H2 O Oxygen is a product of photosynthesis; therefore we will be measuring the amount or rate of this...   [tags: Papers] 1076 words
(3.1 pages)
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An Analysis and Evaluation of Data from Photosynthesis Experiments - An Analysis and Evaluation of Data from Photosynthesis Experiments Graph analysis This is my analysis for the investigation in to the affect of light intensity on the rate of photosynthesis to the Canadian pondweed, elodea. In the results the pattern is that when the light intensity is higher the readings are generally higher. On the graph the less the light intensity the lower the gradient of the curve. the equation for the photosynthesis process is; CO2 + 2H2O + Light Energy ========> [CH2O} + O2 + H2O, This shows that when the light intensity is increased the rate of reaction will be more quicker he only anomalous result there was, is the one in the 1...   [tags: Papers] 738 words
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Investigating the Effect of Light Intensity on Photosynthesis in a Pondweed - Investigating the Effect of Light Intensity on Photosynthesis in a Pondweed Aim: To investigate how the rate of photosynthesis changes at different light intensities, with a pondweed. Prediction: I predict that the oxygen bubbles will decrease when the lamp is further away from the measuring cylinder, because light intensity is a factor of photosynthesis. The plant may stop photosynthesising when the pondweed is at the furthest distance from the lamp (8cm). Without light, the plant will stop the photosynthesising process, because, light is a limited factor....   [tags: Papers] 1053 words
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Investigating Whether Light Intensity Affects Photosynthesis - Investigating Whether Light Intensity Affects Photosynthesis Background Information: Photosynthesis means “making through light” and occurs in the cells of green plants, which are exposed to light. The word equation for photosynthesis is: Light [IMAGE]Carbon Dioxide + Water Glucose + Oxygen Chlorophyll Although most of the glucose produced is converted into insoluble starch for storage in the stem, leaves or roots, some is used immediately by the plant to provide via respiration....   [tags: Papers] 703 words
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The Effect of Light Intensity on Photosynthesis Of Elodea Canadensis - The Effect of Light Intensity on Photosynthesis Of Elodea Canadensis Introduction I wanted to find out how much the light intensity affected the Photosynthesis in Elodea Camadensa. I decided to do this by measuring the amount of oxygen created during photosynthesis. Photosynthesis is the procedure all plants go through to make food. This process uses Carbon dioxide, water and light energy. It produces Oxygen and Glucose. [IMAGE]Carbon dioxide + water Light Energy glucose + oxygen Chlorophyll [IMAGE]6CO2 + 6H20 Light Energy C6 H12 O6 + 6O 2 Chlorophyll Photosynthesis occurs in the leaves of the plant in the palisade layer....   [tags: Papers] 991 words
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Using Photosynthesis to Supply Clean Energy - Using Photosynthesis to Supply Clean Energy Introduction One of the things that most intrigues scientists is the ability to create new methods to harness clean energy. This desire to discover new ways of producing clean energy has lead scientists at Stanford University and other universities to discover a way to harness the electricity produced during the process of photosynthesis. After the initial experiment scientists saw photosynthesis as a viable means to harness and produce energy for the public....   [tags: plants, electrons, electricity]
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Photosynthesis - Photosynthesis 1. Would you illuminate your house plants with a green light bulb. Why or why not. It would not be a wise choice to put a plant under a green light bulb. The reason for this is that due to the fact that the leaves are green they reflect green light. This shining green light onto the flowers will cause photosynthesis to stop. Since the light is being reflectd, the cells do not get any light. With out light they cannot carry out the everyday occurance of photosyntesis. If the choice was mine, I would place them into violet light, because almost none of it would be reflected....   [tags: essays research papers] 385 words
(1.1 pages)
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Photosynthesis Converts Inorganic Compounds to Organic Matter - Introduction Photosynthesis is a process done by photoautotrophs to convert inorganic compounds and light energy to organic matter. In all photosynthetic organisms, organic pigments exist to harvest the light energy. The three major classes of pigments are chlorophylls (green pigments) and carotenoids (yellow or orange pigments) which are lipophilic and associated in Chl-protein complexes as well as phycobilins that are hydrophilic. All chlorophylls (a, b, c and d) have two major absorption bands: blue or blue-green (450 or 475 nm) and red (630-675 nm)....   [tags: energy, pigment, photo-autotrophs] 1348 words
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How Light Intensity Affects the Photosynthesis of a Canadian Water Weed - How Light Intensity Affects the Photosynthesis of a Canadian Water Weed Photosynthesis happens in all types of plants, whether on land or in the water. Photosynthesis is a process that plants use every minute in order to survive. They create the food that they need from Carbon Dioxide and Water. Here is the full, balanced chemical equation; [IMAGE]Carbon Dioxide + Water Oxygen + Glucose CHLOROPHYLL Or the chemical equation: [IMAGE]6CO2 + 6H2O 6O2 + C6H12O6 With these equations, we are going to see that at what rates photosynthesis happens in this Elodea....   [tags: Biology Essays] 694 words
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the rate of reaction between calcium carbonate and hydrochloric acid - I am going to investigate the rate of reaction between calcium carbonate and hydrochloric acid. I will look at the various factors affecting the reaction and select one variable to change, while the others keep constant in order to carry out a deta... Investigating Rate of Reaction Aim I am going to investigate the rate of reaction between calcium carbonate and hydrochloric acid. I will look at the various factors affecting the reaction and select one variable to change, while the others keep constant in order to carry out a detailed investigation....   [tags: GCSE Chemistry Coursework Investigation] 2893 words
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Rate of Reaction of Dilute Hydrochloric Acid and Sodium Thiosulphate - Rate of Reaction of Dilute Hydrochloric Acid and Sodium Thiosulphate To investigate the change in rate of reaction between DILUTE HYDROCHLORIC ACID and SODIUM THIOSULPHATE as the concentration varies. PLAN A chemical reaction takes place over a specific period of time i.e. which is the time for the reactants to be formed into the products. If the reactants take a relatively short time to form the products, the reaction is known as a FAST one. The RATE of that particular reaction is high. On the other hand, a reaction which takes a longer time is known as a SLOW reaction, and as a result is known to have a LOW rate of reaction....   [tags: Reaction Rates Chemical Reactions Essays] 2286 words
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Investigating How Much Light Intensity Affects the Rate of Reaction - Investigating How Much Light Intensity Affects the Rate of Reaction Aim: To investigate how much light intensity affects the rate of reaction. Reaction: photosynthesis of Canadian pondweed (Elodea) Introduction- what is photosynthesis. The definition of photosynthesis is when plants process water and carbon dioxide to produce glucose by the process of photosynthesis. Photosynthesis is the method that plants use to make their own food. When photosynthesis takes place, plants use the suns energy to combine carbon dioxide from the air with water from the soil to create glucose (a carbohydrate)....   [tags: Papers] 713 words
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Analysis of the Absorption of Green Light Versus Red Light Absorption in Spinach Leaves - Analysis of the Absorption of Green Light Versus Red Light Absorption in Spinach Leaves The goal of the experiment was to determine if green light had less ability to absorb than red light in spinach leaves. This was done by separating the photosynthetic pigments (chlorophyll a, chlorophyll b, carotene and xanthophylls) from one another using paper chromatography. The separated pigments were then analyzed for their absorption spectrum using a spectrographometer. When the data was graphed it clearly showed the higher rate of red light absorption over green light....   [tags: Photosynthesis Experiments Science Biology Essays]
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The Analysis of Spinach Pigmentation During Photosynthesis (biology Lab Report) - The Analysis of Spinach Pigmentation<p> During Photosynthesis <p> University of Alabama<p> I. Introduction:<p> "Photosynthesis is the conversion of light energy to chemical energy that is stored in glucose or other organic compounds; it occurs in plants, algae, and certain prokaryotes" (Campbell, G-16). The formula below is photosynthesis and "the ingredients necessary to make a plant grow" (KoK, 30).<p> 6CO_2 + 6H_2_0,,³ C_6_H_12_O_6_ + 6CO_2<p> Photosynthesis occurs within chloroplasts which are in leaf cells....   [tags: Biology] 1035 words
(3 pages)
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How Light and Wind Affect the Rate of Plant Transpiration - Introduction: The purpose of this experiment is to find out if the rate of transpiration in plants can be increased using light and wind. One of the biggest problems that land plants have to deal with is avoiding water loss or desiccation (Whiting, 2011). Transpiration is the loss of water vapor through the stomata (Xu et al. 1995). Transpiration occurs through stomata of leaves and also sometimes occurs in flowers (Vodopich and R. Moore, 2011). During transpiration, the water in the roots is being pulled up through the plant (Xu et al....   [tags: Scientific Research ]
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Investigate the Effect of Moisture Content on Wheat Grain Seed's Respiration Rate - Investigate the Effect of Moisture Content on Wheat Grain Seed's Respiration Rate HYPOTHESIS: There will be a positive correlation between moisture content of wheat grains and their respiration rate. Therefore as the moisture content (independent variable) increases so will the respiration rate (dependent variable). The rationale behind the hypothesis came from studying photosynthesis in plants. During the light-dependent reactions of photosynthesis, the photolysis of water (H2O) occurs inside photosystem II....   [tags: GCSE Biology A2 A-Level Coursework] 1532 words
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Results and Methods for Measurement of Photosynthetic Rate of the Leaves of Bean and Corn Plants - Methods To determine the rates of photosynthesis for the 5-week-old bean plant and the 5-week-old corn plant, the QUBIT Systems, Inc. apparatus was employed. A diagram of this apparatus is presented in page 4-5 of the biology lab manual (Bio, 2002). The computer connected to this apparatus was adjusted to present two graphs which measure the percentage of Oxygen in the air over time and photon flux (micromole quanta/m^2/s). Next, a leaf was retrieved from the top of a bean plant and sealed from the air in the laboratory via thumbscrews inside the leaf chamber of the apparatus....   [tags: Free Essays] 418 words
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Temperature's Effect on the Rate at Which Amylase Breaks Down Starch - Temperature's Effect on the Rate at Which Amylase Breaks Down Starch Planning ======== My plan is to find out what temperature is most ideal for amylase to break down starch at, and how fast it can break down starch at this temperature. I predict that the colder the temperature, the slower the reaction between the starch and amylase will be. The hotter the temperature the quicker the reaction will be. Enzymes are the catalysts of chemical reactions taking place in living organisms....   [tags: Free Essays] 403 words
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Investigating the Relationship Between the Transpiration Rate of a Shoot and the Degree of Opening of the Stomata of Its Leaves - Investigating the Relationship Between the Transpiration Rate of a Shoot and the Degree of Opening of the Stomata of Its Leaves I will be investigating the relationship between the transpiration rate of a shoot and the degree of opening of the stomata of its leaves. Transpiration is the loss of water vapour from the surfaces of a plant. Solar energy turns the water in the plants into a vapour causing it to evaporate into the leafÂ’s internal air spaces before diffusing out of the stomata into the air....   [tags: Papers] 1201 words
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Lab Report Testing the Effect of Light Intensity on the Rate of Photosynthisis - Lab Report Testing the Effect of Light Intensity on the Rate of Photosynthisis I'm going to investigate the amount of light used in photosynthisis to see if it has a noticable effect when you increase or decrease the light intensity. Photosynthisis is the way in which light and carbon-dioxide is used by a plant to produce energy in the form of starch. 6CO + 6H O = C H O + 6O The factors that effect the rate of photosynthisis are the amount of light, the amount of carbon-dioxide (CO ) and the temperature that can be used by the plant....   [tags: Papers] 374 words
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The Process of Photosynthesis - Photosynthesis is the process undergone by plants consisting of a series of chemical reactions that require four factors; water, carbon dioxide, radiant energy and temperature using chlorophyll molecules to trap radiant energy from the sun resulting in the making of glucose and oxygen as bi-products. The process of photosynthesis provides plants with the food and energy they need to grow. Plants that produce their own food are called autotrophic plants. Not only do these plants make food for themselves but they also serve as primary producers....   [tags: plants, energy, chloroplast] 1024 words
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An Experiment Based on Phtosynthesis - Introduction: Photosynthesis is the use of sunlight to produce carbohydrates. In order to produce carbohydrates, photosynthesis converts the energy in sunlight to chemical energy in sugar bonds. Photosynthesis takes place in only the green parts of plants, which the green part are chlorophyll pigments. An example of this would be the leaves of a plant. In order for photosynthesis to occur sunlight, carbon dioxide, and water are essential, however oxygen is produced in the process. Photosynthesis consists of two connected sets of reactions....   [tags: sunlight, chlorophyll] 1153 words
(3.3 pages)
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The Process of Photosynthesis - “Sunlight plays a much larger role in our sustenance than we may expect all the food we eat and all the fossil fuel we use is a product of photosynthesis, which is the process that converts energy in sunlight to chemical forms of energy that can be used by biological systems” (Vermaas). This quote shows that photosynthesis is the most essential part of the exchange between humans and plants because it produces all the resources we need. When we sit down to eat fruit or vegetables, we usually don’t think about where those come from, how those grow up....   [tags: plants, energy, light] 1332 words
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Experiment to Determine if Physical Activity Will Increase in Pulse Rate and Blood Pressure - Introduction The ancient Greeks believed that the human heart pumped an endless supply of “pneuma”, or life energy. Galen, a Greek physician, believed that the “pneuma” and blood flowed from the heart like a fountain. He believed that there was an endless supply of this precious life source. It was not until 1616 that William Harvey determined that Galen was not entirely correct. Due to the practice of bloodletting during Harvey’s time, his belief that blood is in fact finite was not warmly welcomed....   [tags: Physical Activity, Pulse Rate, Blood Pressure] 1419 words
(4.1 pages)
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Light and Photosynthesis - For my one research task project I have decided to see if light is necessary for photosynthesis to take place in green plants. I choose this topic because I wanted to see if light necessary for photosynthesis is really. It is also a very interesting topic because most living things need light to function, survive and grow. Photosynthesis is the physic-chemical process by which green plants use light energy to photosynthesis. When Photosynthesis occurs it takes in the co2 from the atmosphere and releases oxygen as a bi product....   [tags: chemical energy, green plants]
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Photosynthesis and the Vital Role of Chlorophyll - Our world is filled with beautiful plants of all different colours. Green is clearly the most prominent colour, and we know that this is due to the presence of chlorophyll. We have also learnt that photosynthesis is a vital process that occurs in order to create glucose and oxygen, by transforming carbon dioxide and water in the presence of light energy. Chlorophyll is vital for this process due to the fact that the light energy which allows for this process to occur is trapped in the chlorophyll molecule....   [tags: green color,glucose,oxygen,plants]
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The Processes of Photosynthesis and Fermentation - Introduction: “Fermentation occurs in fruits, bacteria, yeasts, fungi, as well as in mammalian muscle”(Biology Online, 2008, p. xx-xx) . “Yeasts were discovered to have connection with fermentation as observed by the French chemist, Louis Pasteur” (Biology Online, 2008, p. xx-xx). “Pasteur originally defined fermentation as respiration without air” (Biology Online, 2008, p. xx-xx). “However, fermentation does not have to always occur in anaerobic condition” (Biology Online, 2008, p. xx-xx). “Yeasts still prefer to undergo fermentation to process organic compounds and generate ATP even in the presence of oxygen” (Biology Online, 2008, p....   [tags: Biology, Organic Compounds, Bacteria, Fungi]
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The Stages of Cellular Respiration and Photosynthesis - ... Then the pyruvic acid loses a CO2 then combines with coenzyme A to create Acetyl CoA for further break down. Finally, a NAD+ (an electron carrier) gains an electron from the CO2 and turns into NADH. The third step is called the Krebs Cycle (a.k.a. Citric Acid Cycle) which takes place in the mitochondria and starts off with Acetyl CoA a C2 which combines with a C4 to create a C6 then it loses a CO2. With the CO2 a NADA+ is transferred into a NADH. Then a C5 loses a CO2 and then another NAD+ is converted to NADH....   [tags: interaction, interdependence, cell]
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Recent Advances in Artificial Photosynthesis - Introduction: Artificial photosynthesis could revolutionize our energy source and could solve the global warming crisis. Since the artificial photosynthesis is a renewable and clean energy with zero carbon dioxide emission and only harnessing the sun energy. This innovative works that mimic the process of plants by splitting the water molecules and produce products of Hydrogen and oxygen only by using the energy from the sunlight. With this the technology, it can produce products of hydrogen that can be converted into fuels that give many benefits to human for instance, transport, electricity generation and industries....   [tags: carbon dioxide, nanotechnology, science] 1307 words
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Mr. Euglena, Photosyntesis and Aerobic Respiration - ... The coenzyme NADP then holds the product of twelve hydrogen atoms (12 H) as 6 NADPH2 to carry to the next process. The three oxygen molecules (3 O2) are then released into the air as a byproduct. The light reaction must happen a second time in order for the second phase of photosynthesis, the dark reaction, to occur. The same cycle of the light reaction then takes place. The result of two light reactions is a total of six oxygen molecules (6 O2) released into the air as byproducts and 12 NADPH2 (24 H) carried over to the dark reaction of photosynthesis....   [tags: adenosine triphosphate molecules (ATP)] 887 words
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