Thus, chlorophyll is at the centre of the photosyntheticoxidation-reduction reaction between carbon dioxide and water. Treatment of cholorophyll- with acid removes the magnesium ionreplacing it with two hydrogen atoms giving an olive-brownsolid, -.
In this process the energyabsorbed by chlorophyll transforms carbon dioxide and water intocarbohydrates and oxygen:
Note: CH2O is the empirical formula of carbohydrates.The chemical energy stored by in carbohydrates drives biochemicalreactions in nearly all living organisms.In the photosynthetic reaction electrons are transferred from water tocarbon dioxide, that is carbon dioxide is reduced by water.
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)....
Photosynthesis occurs inside chloroplasts. Chloroplasts contain chlorophyll, a green pigment found inside the thylakoid membranes. These chlorophyll molecules are arranged in groups called photosystems. There are two types of photosystems, Photosystem II and Photosystem I. When a chlorophyll molecule absorbs light, the energy from this light raises an electron within the chlorophyll molecule to a higher energy state. The chlorophyll molecule is then said to be photoactivated. Excited electron anywhere within the photosystem are then passed on from one chlorophyll molecule to the next until they reach a special chlorophyll molecule at the reaction centre of the photosystem. This special chlorophyll molecule then passes on the excited electron to a chain of electron carriers.