Skip to content

Photosynthesis

4 lessons in Bioenergetics.

23 exam questions · 46 marks

4.1 The photosynthesis reaction What photosynthesis is, its word and symbol equations, why it is endothermic, the role of chlorophyll and chloroplasts, and (OCR) the two stages of photosynthesis. AQA Edexcel OCR 4.2 Limiting factors and the rate of photosynthesis How light intensity, carbon dioxide concentration, temperature and the amount of chlorophyll limit the rate of photosynthesis, how to read limiting factor graphs, and (Higher) how factors interact and are controlled in greenhouses. AQA Edexcel OCR 4.3 Required practical: light intensity and photosynthesis The required practical on how light intensity affects the rate of photosynthesis: counting oxygen bubbles from pondweed at different distances from a lamp, controlling variables, and (Higher) the inverse square law for light intensity. AQA Edexcel OCR 4.4 Uses of glucose from photosynthesis AQA: the five ways plants use the glucose made in photosynthesis: respiration, starch for storage, fats and oils, cellulose for cell walls, and amino acids for proteins using nitrate ions. AQA