PHOTOSYNTHESIS
LIGHT DEPENDENT REACTIONS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Back to the light reactions
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out of the chloroplast
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Detailed explanation-1: -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).
Detailed explanation-2: -Where do the ADP and NADP+ go after they are used in the Calvin cycle? They travel back to the thylakoid to be recycled in the light-dependent reaction.
Detailed explanation-3: -The Calvin cycle converts ATP to ADP and Pi, and it converts NADPH to NADP+. The ADP, Pi, and NADP+ can be reused as substrates in the light reactions.
Detailed explanation-4: -The net effect of these steps is to convert light energy into chemical energy in the form of ATP and NADPH. The ATP and NADPH from the light-dependent reactions are used to make sugars in the next stage of photosynthesis, the Calvin cycle.
Detailed explanation-5: -THE DARK STAGE (THE CALVIN CYCLE) The dark stage functions if ATP, NADPH and carbon dioxide are present. At the completion of this stage ADP, Phosphorous, and NADP+ are recycled for use in the light stage.