AQA A level Bio 5.1 Photosynthesis

The photolysis of water is an important part of the process of photosynthesis. Describe what happens in the photolysis of water. (2)

Water forms H⁺ and e^- (1)

Oxygen is formed (1)

Describe the effect of light energy in the light-dependent reaction of photosynthesis (2)

Light (is absorbed by chlorophyll which) excites the electrons (1)

causes electrons to leave chlorophyll (1)

Describe the role of electron transport chains in the light-dependent reactions of photosynthesis (6)

Electron transport chain accepts excited electrons (1)

from photosystems (1)

Electrons lose energy as they pass down the chain (1)

ATP is produced (1)

From ADP + Po (1)

Reduced NADP is formed (1)

The products of the light-dependent stage are used in the light-independent stage of photosynthesis. What are these products used for? (1)

Needed for the production of glucose