Which statement correctly outlines some of the main events in photosynthesis?
Correct answer: A. A 5-Carbon carbohydrate accepts carbon dioxide and is then reduced by NADPH derived from photophosphorylation
- A. A 5-Carbon carbohydrate accepts carbon dioxide and is then reduced by NADPH derived from photophosphorylation
- B. A 3-Carbon carbohydrate is regenerated and reduced by hydrogen molecules derived from photophosphorylation
- C. Photolysis uses light to produce reduced NADP and oxygen which are used to reduce a 3-Carbon carbohydrate
- D. Photolysis produces NADPH and ATP which are used to reduce a 5-Carbon carbohydrate
Explanation
During the light-independent reactions, a 5-carbon carbohydrate called RuBP accepts carbon dioxide to form 3-carbon phosphoglycerate, which is reduced by NADPH formed in the light reaction.
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Cellular respiration explains how cells release energy from glucose through glycolysis, the link reaction, Krebs cycle and electron transport chain. It includes ATP production, substrate-level and oxidative phosphorylation, aerobic versus anaerobic respiration, and the roles of mitochondria, oxygen and fermentation in energy transfer.
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