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Multiple Choice
In which part of the cell do the light-independent reactions of photosynthesis occur?
A
Chloroplast stroma
B
Mitochondrial matrix
C
Thylakoid membrane
D
Cytoplasm
Verified step by step guidance
1
Understand that photosynthesis consists of two main stages: the light-dependent reactions and the light-independent reactions (Calvin cycle).
Recall that the light-dependent reactions occur in the thylakoid membranes of the chloroplasts, where sunlight is converted into chemical energy.
Recognize that the light-independent reactions, also known as the Calvin cycle, do not require light directly and instead use the chemical energy produced in the light-dependent reactions.
Identify the location within the chloroplast where the Calvin cycle takes place. This is the stroma, which is the fluid-filled space surrounding the thylakoids.
Conclude that the light-independent reactions of photosynthesis occur in the chloroplast stroma, where carbon dioxide is fixed into glucose using ATP and NADPH from the light-dependent reactions.