Photosynthesis - created from Mind Map

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photosynthesising plants are the base of all food chains

in eukaryotic plants it occurs in the stem and leaf in organelles called chloroplasts

The light INDEPENDENT reaction

formula for photosynthesis

The light DEPENDENT reaction

chloroplasts capture light and convert it into chemical energy in the form of sugar and other organic molecules

does not require light

stage occurs in storm inside chloroplasts

ATP is used to combine carbon and oxygen (from carbon dioxide) with hydrogen (from water) to produce a 3C organic molecule called triose phosphate. This involves a cycle (complex series) of reactions called the Calvin (Benson) Cycle.

Triose phosphate molecules are then combined together to form glucose. Glucose molecules are then combined together to form starch (for storage).

enzyme RUBISCO is used in this process

carbon dioxide + water -> glucose + oxygen

6CO2 + 6H2O -> C6H12O6 + 6O2

requires presence of light

stage occurs in grand (in thylakoid discs) inside chloroplasts

pigments absorb energy which they use to:

spilt water molecules into hydrogen and oxygen

produce some ATP molecules