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Multiple Choice
Which molecule is required for the light-independent reactions in photosynthesis to occur?
A
ATP
B
NADPH
C
Oxygen
D
Glucose
Verified step by step guidance
1
Understand the context of photosynthesis, which consists of light-dependent and light-independent reactions. The light-independent reactions are also known as the Calvin cycle.
Recognize that the Calvin cycle occurs in the stroma of chloroplasts and does not require light directly, but it does require energy and reducing power.
Identify the molecules that provide energy and reducing power for the Calvin cycle. These are ATP and NADPH, which are produced during the light-dependent reactions.
Consider the role of ATP in the Calvin cycle. ATP provides the energy needed for the conversion of 3-phosphoglycerate into glyceraldehyde-3-phosphate.
Consider the role of NADPH in the Calvin cycle. NADPH provides the reducing power needed for the reduction of 3-phosphoglycerate into glyceraldehyde-3-phosphate.