Multiple Choice
How many molecules of CO2 are required to create one glyceraldehyde 3-phosphate?
12. Photosynthesis
Light Independent Reactions
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Why does the Calvin cycle require light?
A
Because light forms ATP through the light dependent reactions
B
Because light forms NADPH through the light dependent reactions
C
Because light forms CO2 through the light dependent reactions
D
Because light forms O2 through the light dependent reactions
Verified step by step guidance1
Understand that the Calvin cycle is part of photosynthesis, which occurs in the chloroplasts of plant cells.
Recognize that the Calvin cycle itself does not directly require light; it is known as the light-independent reactions or dark reactions.
Identify that the Calvin cycle requires ATP and NADPH, which are produced during the light-dependent reactions of photosynthesis.
Explain that during the light-dependent reactions, light energy is captured by chlorophyll and used to convert ADP and NADP+ into ATP and NADPH, respectively.
Conclude that while the Calvin cycle does not use light directly, it depends on the products of the light-dependent reactions (ATP and NADPH) to drive the fixation of carbon dioxide into glucose.
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