NEET BIOLOGY

Detailed explanation-1: -Although the Calvin Cycle is not directly dependent on light, it is indirectly dependent on light since the necessary energy carriers (ATP and NADPH) are products of light-dependent reactions.

Detailed explanation-2: -The ATP and NADH are then used by the Calvin cycle to reduce carbon dioxide into sugar molecules. Therefore, without ATP and NADH from the light reactions of photosynthesis, the Calvin cycle cannot occur.

Detailed explanation-3: -The plants shut down the Calvin Cycle in the dark when the levels of ATP and NADPH decline because the Calvin Cycle needs reduced NADP, which is short-lived and occurs from light-dependent reactions.

Detailed explanation-4: -The Calvin Cycle All three necessary conditions are required – chlorophyll pigments, the chloroplast “theater, ” and enzyme catalysts. The first stage transforms light energy into chemical energy, stored to this point in molecules of ATP and NADPH. Look again at the overall equation below.

Detailed explanation-5: -Overview of the Calvin cycle This process is fueled by, and dependent on, ATP and NADPH from the light reactions. Unlike the light reactions, which take place in the thylakoid membrane, the reactions of the Calvin cycle take place in the stroma (the inner space of chloroplasts).