In the light-dependent stage of photosynthesis, non-cyclic photophosphorylation operates via an electron transport chain located in the thylakoid membrane. Which two substances serve as the initial electron donor and the terminal electron acceptor for this pathway?
Carbon dioxide and RuBP\text{RuBP}RuBP
Water and NADP+\text{NADP}^+NADP+
Oxygen and NADPH\text{NADPH}NADPH
Reduced NADP\text{NADP}NADP (NADPH\text{NADPH}NADPH) and Photosystem I
12 exam-style questions on OCR GCSE Biology 1.4 Photosynthesis, covering 1.4.1 Photosynthesisers as biomass producers, 1.4.2 Factors affecting the rate of photosynthesis, and 1.4.3 Limiting factors in photosynthesis. Each one has a worked solution and a mark scheme showing where the marks go.