Determining The Rate Of Photosynthesis Essays

1269 Words Jan 15th, 2016 6 Pages
Determining the Rate of Photosynthesis and the Effect That pH Has on It

Abstract - The purpose of this experiment was to determine what variables affect the rate of photosynthesis. The variable tested was the pH level of the “environment” and this was tested using leaf discs from a plant. By testing the leaf discs in different pH levels of two, four, six, eight, and ten, it was found that the rate of photosynthesis was at its highest in a pH of six. It was also found that the rate of photosynthesis was at its second highest at a pH of eight and at its third highest at a pH of ten. The lowest photosynthesis rates were found to be at a pH of two and four. Therefore, photosynthesis works best in a more neutral environment where the pH levels aren’t too acidic or too basic.

Introduction - Photosynthesis is a process that uses the energy from sunlight and converts carbon dioxide into organic compounds. There are several ways to test the rate of photosynthesis and to determine what factors and elements are important for this process to be successful. Chromatography is known as the separation of a mixture by passing it in solution or suspension or as a vapor through a medium in which the components move at different rates. It is very common to use chromatography paper to separate different plant pigments to help determine which pigments are found and may be used to assist in photosynthesis. Chlorophyll, for example, is a green pigment that gives most plants their color and…

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