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light affects photosynthesis
looking at osmosis in plant tissue
looking at osmosis in plant tissue
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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. This light energy can then be
transferred to chemical potential energy. The energy is then
distributed around the plant and used for various reasons around it.
The plant contains a lot of cellulose and it is needed in the plant
cell walls and in the membranes. The osmotic pressure is kept up due
to this rigid structure of the plants and so, it is very useful as a
substance to make sure that everything is working smoothly within the
plant. The xylem and phloem vessels. They keep the rigidity and
turgidity of the plant structure here also, and as a result, water and
glucose are able to travel to and from the leaves and roots.
Temperature is an important factor in photosynthesis, and it helps to
regulate the smooth functioning of enzymes and such, within plants.
The enzymes work best at approximately 37 degrees to survive within
the hot waters of springs such as those in Greenland and other areas
which are usually very cold. If the temperature Celsius. Although
there are many enzymes adapted to perform at an optimum rate at
temperatures much higher, there are some which are able is to high,
this will denature the enzymes and thus, will also cause the rate of
reaction of photosynthesis to be much slower, and the same goes for
the extremely cold temperatures. The enzymes will not be able to
function properly due to the fact that there will not be enough
kinetic energy to cause or result in effective collisions between the
enzymes and substrate molecules. Due to this, there are a lot of
at the small end of the axis to see a more reliable pattern. I could
This shows that there could be three variables in this experiment, carbon dioxide, water and light energy. So in our case the variable light energy (light intensity) will be used. The equation also shows that if there is more light energy then more glucose and oxygen will be produced.
Cellular respiration and photosynthesis are important in the cycle of energy to withstand life as we define it. Cellular respiration and photosynthesis have several stages in where the making of energy occurs, and have diverse relationships with organelles within the eukaryotic cell. These processes are central in how life has evolved.
The Effect of Light Intensity on the Rate of Oxygen Production in a Plant While Photosynthesis is Taking Place
Autotrophs, can build organic compounds from simple molecules such as water and carbon dioxide and their type of feeding is called autotrophic nutrition. While they are building complex molecules, they need large amounts of energy. They are divided into two groups according to their source of energy: chemoautotrophs and photoautotrophs. Chemoautotrophs can synthesize organic compounds from CO₂ AND H₂O by using inorganic oxidation energy and they do not require sunlight. However, photoautotrophs, including green plants, produce sugar and O₂ from CO₂ and H₂O by using sunlight. The green pigment which absorbs the light is called chlorophyll and this process is called photosynthesis.
Firstly, the cytoskeleton, (made up of microtubules and microfilaments), moves the organelles around giving them shape. The plant cells have cell walls and cytoskeletons. The animal cell does not have cell walls. The cytoskeleton gives the cell a structure and a shape. It also gives the cell locomotion. The cytoskeleton base is attached to the cell membrane, so the cell membrane plays a role of helping a cell maintain its structure. Secondly, the cytoplasm also aides the cell for structure. The cytoplasm surrounds the whole cell. This in turn helps support the cell by keeping all the organelles in place. The cell would be empty and deflated if their was no cytoplasm, so it takes a huge role for maintains the cell's shape and structure. Last but not least, the plant cells! The plant cells has cell walls that maintains its structure. Although, plant cells have cytoskeletons they have cell walls too. The cell wall is a rigid, tough, or a flexible barrier. They support the plant cell from physical stress, so it can maintain its structure. In brief, cells have a ton of ways to sustain structure and
Investigating the Link Between Wavelength of Light and Rate of Photosynthesis PROBLEM = = = = =
It controls the direction of growth in stem tips in response to different stimuli including gravity and light. The way the plant grows depends on the distribution of auxin in the plant tissue. Auxin is made at the tip of the stem, and then flows downwards. Auxin is vital to the survival of plants because it allows the plant to photosynthesize as much as possible. Light destroys auxin, so when it strikes the stem it kills the auxin on the side nearest the light source, causing an imbalance of auxin. Because more auxin is present on the side facing away from the light source, that side grows faster causing it to tilt and bend towards the light. That process is phototropism. Gravity pulls auxin to the lower side of the stem, therefore the lower side of the stem grows faster. That means that the plant will grow upwards and against gravity. For example, if a plant were placed horizontally, the force of gravity causes the auxin to move to the underside of the stem. Because of the increased amount of auxin, the cells on the bottom side of the stem grow more than the cells on the top side of the stem, causing the stem to bend upwards. A study, done by Ken Haga and Tatsuya Sakai proved that phototropism and gravitropism occur because of
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 photosynthesis. Light is the factor that is linked with chlorophyll, a green pigment stored in chloroplasts found in the palisade cells, in the upper layer of leaves.
Photosynthesis is a series of light driven reactions that convert energy poor compounds such as carbon dioxide and water to energy rich sugars [1] such as glucose. The process generate an electron gradient across the membrane of a chloroplast, which is used for ATP synthesis, and simultaneously produces electrons used to make NADPH, using NADP+ as an energy carrier[2]. Crudely put, it is the method by which autotrophic plants make their own ‘food.’
under the parent plant (Wieseler, 2009). This growth habit is a primary reason the plant was
The Basic Needs For Photosynthesis Plants, as well as some Protists and Monerans, can take small molecules from the environment and bind them together using the energy of light. The incoming light energy is transformed into the energy holding the new molecules together, and the organisms use those molecules as an energy "fuel. " The basic process can be represented this way: CO2 + H2O light> C6H12O6 + O2 Carbon Dioxide Water (sugar) Oxygen In the case of water organisms, the carbon dioxide and water are from their immediate surroundings; for most land plants, the water is absorbed from the soil and the carbon dioxide from the atmosphere.
The process of photosynthesis is present in both prokaryotic and eukaryotic cells and is the process in which cells transform energy in the form of light from the sun into chemical energy in the form of organic compounds and gaseous oxygen (See Equation Below). In photosynthesis, water is oxidized to gaseous oxygen and carbon dioxide is reduced to glucose. Furthermore, photosynthesis is an anabolic process, or in other words is a metabolism that is associated with the construction of large molecules such as glucose. The process of photosynthesis occurs in two steps: light reactions and the Calvin cycle. The light reactions of photosynthesis take place in the thylakoid membrane and use the energy from the sun to produce ATP and NADPH2. The Calvin cycle takes place in the stroma of the chloroplast and consumes ATP and NADPH2 to reduce carbon dioxide to a sugar.
Conclusion- The data supports my hypothesis. By looking at the graph titled “Average Rate of Photosynthesis” we see massive photosynthetic activity occurring from :30 to 10:00 with particularly impressive growth occurring in red and blue light around the 5:00 and 8:30 respectively. The colors that have the highest influence on photosynthesis is blue and red. This is also why so many gardeners both amateur and professional alike use blue and red lights to grown plants. Under red light, all discs floated before the tenth minute. This was also observed with blue light. The graph shows that green had the least successful photosynthetic rate, whereas red, blue and regular natural light had the most successful photosynthetic rate. Photosynthesis involves converting light energy in chemical energy through the use of photosynthetic pigments like chlorophyll. Light from the sun is comprised of different colors, sometimes referred to as wavelengths. My data matches research conducted by other scientists: chlorophyll absorbs red and blue light more than green. The green light is instead reflected making the leaves appear green. Green light experienced almost no photosynthesis throughout the entire experiment at any time. Almost no discs floated to the top at any point. Yellow, interestingly, was an outlier. I will discuss this further in the “Limitations of Experimental Design” section.
Plants also had to adapt on the surface in order to survive the climate change of moving onto land. The changes made to the surface of plants are most closely observed by their formation of a cuticular wax. This waxy cuticle is impermeable to water and acts as a method of controlling plant’s water intake. It can be made thinner or thicker depending on the plant’s needs and the environment at the time, changing in response to droughts or excessive amounts of rain.