Which is not true for the dark reaction?
Correct answer: C. Also called Z-scheme
- A. Does not require light directly
- B. It uses ATP
- C. Also called Z-scheme
- D. G3P is produced
Explanation
The correct answer is that the dark reaction is not called the Z-scheme. The Z-scheme specifically refers to the series of electron transport processes that occur in the light-dependent reactions of photosynthesis, where electrons move in a zigzag pattern. The dark reaction, also known as the Calvin cycle, does not involve this electron transport chain and instead focuses on carbon fixation, using ATP and NADPH produced in the light-dependent reactions to convert carbon dioxide into G3P, a precursor to glucose. Options A, B, and D correctly describe processes involved in the dark 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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