AQA GCSE Biology · 8461
Specification 4.4.1.2 · Paper 1
The amount of photosynthesis that occurs per unit time, indicated by a change such as the quantity of oxygen or glucose produced.
Revise: Factors Affecting the Rate of PhotosynthesisHigh temperature disrupts the bonds maintaining an enzyme's shape. Its active site changes shape, so substrates fit less successfully; the enzyme is denatured and the rate of photosynthesis decreases. Consequently, a temperature graph usually forms a peak rather than merely rising to a plateau.
- Revise: Required Practical: Investigating Light Intensity and Photosynthesis
The amount of change measured per unit of time; here, oxygen bubbles produced per minute can estimate how quickly photosynthesis is occurring.