The Calvin cycle begins when carbon dioxide reacts with?
Correct answer: D. RuBP
- A. NADP
- B. ADP
- C. FADH
- D. RuBP
Explanation
The Calvin cycle reactions fix CO2 from the environment into carbohydrate molecules. Enzyme, Rubisco catalyzes this fixation reaction by reacting CO2 with Rubisco.OPTION A: NADP is the reducing agent produced by the light reaction during photosynthesis and is consumed in the Calvin cycle of photosynthesis.OPTION B: Calvin cycle is fueled by ATP; hence, ADP has no role in the Calvin cycle.OPTION C: FADH has no role in the Calvin cycle.OPTION D: Enzyme, Rubisco, catalyzes this fixation reaction by reacting CO2 with Rubisco.
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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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