biology - how light intensity affects the rate of photosynthesis Essay

Biology Coursework V Does The decrease Intensity Affect the Rate of PhotosynthesisThe InvestigationIn this sample I will investigate the affect in which the waking strong point will have on a plants photosynthesis process. This will be do by measuring the bubbles of oxygen and having a bulb for the light lastingness variable.VariablesThe input variable which will be engaged in this probe will be the light rapture (this will be a 100Watt bulb being locomote besottedr and further away from the plant). The outlet variable which will change as a result of this essayation will be the amount of oxygen made in the experiment due to the amount of light intensity increases (causing the plant to photosynthesise to a longer extent).PredictionI predict that as the input variable, the light intensity increases (the light moved towards the plant) the outcome variable, the amount of oxygen, produced from photosynthesis will be larger. Plants can absorb and use light energy because t hey have a green pigment, chlorophyll, contained in the chloroplasts in some(prenominal) of their cells. Chlorophyll allows the energy in sunlight to drive chemical substance re make turn overions. Chloroplasts act as a energy transducers, converting light energy into chemical energy. So as the plant has more light the chlorophyll in spite of appearance the chloroplasts can play off faster absorbing in more light for food and energy.The compare for photosynthesis can help to predict the outcome of the investigation.Light Energy Carbon Dioxide + Water -------------- Glucose + OxygenChlorophyllThis 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.I also predict that as the light is moved closer to the plant there will be more bubbles (oxygen) produced due to the increase of photosynthesis speed explained above. So in final stage I predict that the more light intensity there is on the plant the faster the rate of photosynthesis there will be.Fair scrutinyThe fair testing will be carefully checked so the results do not come out to be void. The light intensity will be changed for it is the only variable used in the experiment. though the temperature, watt of the bulb, amount of water, size of the plant and posit... ... in the chloroplasts in some of their cells. Chlorophyll allows the energy in sunlight to drive chemical reactions. Chloroplasts act as energy transducers, converting light energy into chemical energy. So as the plant has more light the chlorophyll inside the chloroplasts can react faster absorbing in more light for food and energy. So this shows my prediction was remunerate for in my experiment and shown in my result put over and graph the more light intensity there is on a plant the higher the rate of my photosy nthesis will be. My prediction is very close to what I said the results will be so my prediction was correct and has been proven to be correct in my result table, graph and instanter explained again in my conclusion.In conclusion the experiment was carried out and had great success proving my prediction to be correct and enabling solid and sensible results which were able to be put in a graph. I believe my prediction could have been more accurate or more okay up if I had made a quantitative prediction. Though what I believed would happen did happen during the experiment which helped to understand the graph and the results which led me to be able to write a thorough report on them.