B4 Photosynthesis (1)

Photosynthesis uses energy from sun to change CO2 and water into glucose and oxygen.

Takes place in chloroplasts in plant cells, contains pigments like chlorophyll that absorb light energy.

6CO2 + 6H2O --> (light energy and chlorophyll) C6H12O6 + 6O2

First light energy used to split water into oxygen gas and hydrogen ions.

Carbon dioxide gas combines with hydrogen ions to make glucose and water.

Water is not a product because more is used up in first stage than made in second stage.

Glucose used for:

• Respiration…