CAIE A Level Biology 9700 · Photosynthesis
A plant leaf is supplied with 14CO₂ in the light. After a short time, radioactive carbon is detected in triose phosphate (TP). Outline the sequence of events that leads to a carbon atom from carbon dioxide becoming part of a triose phosphate molecule. Include the roles of ATP and reduced NADP in your answer.
4 marks, so the mark scheme is looking for about 4 separate creditworthy points. Making the same point twice in different words earns it once.
Outline means: Give the main points briefly. Less detail than describe, but every key step has to be there. One short line per step, in order. The marks are for coverage, not depth.
Written by Markquill to follow the Cambridge International syllabus. Markquill is independent and is not affiliated with or endorsed by Cambridge International.