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. These molecules are situated in the chloroplasts in the mesophyll layer of leaves, but most prominently in the palisade mesophyll which is the main photosynthesising tissue. My interest was sparked when I started to think about the role this so called vital chlorophyll plays and whether it is really necessary for photosynthesis to occur to occur in plants. While thinking about this I noticed that chlorophyll leads to the green colour in plants as green is reflected by the chloroplast cells and red and blue absorbed, therefore plants which are green and white obviously will not have chlorophyll in the parts which are white, as these parts lack the green colour, meaning that photosynthesis is not supposed to occur in these areas. It is also vital to remember that leaves which are fully red still do photosynthesise but the green pigment is just masked by carotenoids, which is why only variegated leaves may be used. The most basic way to actually test this is to look along the lines of leaves which are variegated, meaning they are white and green.
Aim - In this investigation I would like to test whether chlorophyll is necessary for photosynthesis to occur, by testing for the presence of starch in a photosynthesising variegated leaf...
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...07/23/science/how-does-a-plant-with-red-leaves-support-itself-without-green-chlorophyll.html?_r=0 as well as www.sweetsearch.com
TABASUM. (2012, July 07). Experiment to Show that Chlorophyll is Necessary for Photosynthesis:. Retrieved March 23, 2014, from Preserve Articles: http://www.preservearticles.com/2012010119484/experiment-to-show-that-chlorophyll-is-necessary-for-photosynthesis.html
Unknown. (2008, October 29). Chlorophyll. Retrieved March 23, 2014, from How stuff work: http://science.howstuffworks.com/dictionary/plant-terms/chlorophyll-info.htm as well as www.sweetsearch.com
Unknown. (Unknown). Photosynthesis: Sneak Peak Inside a Leaf. Retrieved March 23, 2014, from Home Science Tools: http://www.hometrainingtools.com/photosynthesis/a/1498/
Wiesner, C. A. (2014, March 20). Photos of experiment and method. Pietermaritzburg, Kwazulu Natal, South Africa.
The majority of life on Earth depends on photosynthesis for food and oxygen. Photosynthesis is the conversion of carbon dioxide and water into carbohydrates and oxygen using the sun’s light energy (Campbell, 1996). This process consists of two parts the light reactions and the Calvin cycle (Campbell, 1996). During the light reactions is when the sun’s energy is converted into ATP and NADPH, which is chemical energy (Campbell, 1996). This process occurs in the chloroplasts of plants cell. Within the chloroplasts are multiple photosynthetic pigments that absorb light from the sun (Campbell, 1996).
ABSTRACT: Chloroplasts carry out photosynthetic processes to meet the metabolic demands of plant cells (Alberts, 2008). They consist of an inner thylakoid membrane and a stroma. (Parent et. al, 2008).In this experiment we demonstrate the unique protein compositions of isolated thylakoid and stromal fractions from broken and whole spinach chloroplasts. Because these compartments carry out different metabolic processes, we confirm our hypothesis that performing SDS-PAGE on these fractions will result in distinct patterns on the gels. In isolating and analyzing nucleic acid from broken, whole, and crude chloroplast samples we demonstrate that genes for photosynthetic protein psbA are found in chloroplast DNA, while genes for photosynthetic enzyme
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.
It can be concluded that chloroplast is responsible for photosynthesis, with blue light forming the highest rate of photosynthetic activity. The widespread use of coloured netting in the future could result in indoor plant growth that is unreliant on weather, and the ease of the production of crops with the desirable phenotypes. However, future research is still required to eradicate any unknown data and determine plant responses in relation to wavelength
Photosynthesis can occur in any green part of the plant. This green part contains chloroplasts. Chloroplasts separate photosynthesis and other cellular activities. The cytoplasm like liquid, stroma, in chloroplast consists of ribosome, DNA, and enzymes which takes part in photosynthesis. There are two stages in photosynthesis: light dependent and light independent. In light dependent stage, by using light energy water is broken into hydrogen and oxygen. In light independent stage, hydrogen reacts with CO₂. Also, water is reformed. This stage both happens when it is dark or light.
The green pigment in the chloroplasts are called chlorophyll and that is what absorbs light for a process called photosynthesis. Photosynthesis is a process to make “plant food” and it takes place in the chloroplasts. The process needs sunlight, water, oxygen and carbon dioxide to create sugar. The food created in photosynthesis helps the plant grow and survive, without it, the plant would not have energy or food to do simple tasks. Furthermore, the plant takes less oxygen and releases more oxygen during photosynthesis. In addition, like I said earlier chloroplasts have chlorophyll in them and the chlorophyll gives the plant the unique green color. To summarize, the chloroplasts are vital to plants because they create food from a process called
Photosynthesis is a highly important process that takes place in plants primarily because without it life on this planet would not be able to function properly. “It produces the oxygen we breathe and the food we eat” (Harbinson). Without photosynthesis, life would not be able to sustain itself and our planet would be a barren wasteland. The Photosynthetic process converts light energy into chemical energy. The energy that’s created through the process then later is used to help fuel the organism’s activities. This process can be significantly more complicated than it sounds with different stages and many steps.
Introduction: Photosynthesis uses the sun’s energy and uses it to convert carbon dioxide and water into sugar. There were two plants that stayed outside in the sunlight and two plants that were inside only receiving sunlight from the window. If the plants stay outside then they will grow at a faster rate and will be the tallest with most leaves because they receive more sunlight from the sun and have a fresher environment. Methods: Both the plants inside and outside were exposed to sunlight and given water every day. Results: The plants inside grew more than the plants inside. The plants outside did not last all of the weeks the experiment was being conducted.
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.’
The main four pigments of spinach consist of chlorophyll, carotene, xanthophyll, and also pheophytin. Carotene consists of colors ranging from yellow-orange to orange. These are known as α-and β-, The difference between these two is the position of the double bonds they contain their outside cyclohexene rings. The rest of the carotene are consistent of methyl groups along with conjugated polyenes which are single and double bonds which alternate through the rings. This is the least polar of the pigments spinach contains because there are not polar functional groups present..Chlorophyll is the blue-green pigment that is found in all plant life chloroplasts. These are recognized in two structures- chlorophyll a and b. These both have a porphyrin ring which is an aromatic structure that holds 26 electrons in a conjugated system.
The second part of this lab deals with photosynthesis. This lab has several experiments. In the first experiment students will learn about the effects that different colored test tubes have on photosynthesis in elodea sprigs.
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 .
Photosynthetic pigments are essential for life because they allow photosynthesis to occur by capturing sunlight which is then used alongside carbon dioxide and water to form organic compounds such as glucose and oxygen. The pigments allow the conversion of light energy to chemical energy which other organisms can benefit from. Oxygen is utilised by other organisms in aerobic respiration. The different pigments present in the chloroplasts allow a wide variety of wavelengths of light to be absorbed for efficient photosynthesis and provide colours to the plant to attract pollinators.
Photosynthesis is the process in which living cells from plants and other organisms use sunlight to produce nutrients from carbon dioxide and water, the image below “Diagram of photosynthesis 1,” helps show this process. Photosynthesise generally creates oxygen as a by-product through the use of the green pigment, chlorophyll, found in the plant that helps this reaction occur. “Photosynthesis provides us with most of the oxygen we need in order to breathe. We, in turn, exhale the carbon dioxide needed by plants,” (factmonster,2017). This is able to show us why photosynthesis is so greatly needed to occur through plants in order to give one another essentials needed for continuity of life. “Plants perform photosynthesis because it generates the food and energy they need for growth and cellular respiration,” (photosynthesieeducation, 2016).
According to scientists, photosynthesis is “the process by which green plants and some other organisms use sunlight to synthesize foods from carbon dioxide and water. Photosynthesis in plants generally involves the green pigment chlorophyll and generates oxygen as a byproduct.” ("pho•to•syn•the•sis,")