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Multiple Choice
In which cellular structure are the enzymes of the Calvin cycle localized?
A
Cytoplasm
B
Mitochondrial matrix
C
Stroma of the chloroplast
D
Thylakoid membrane
Verified step by step guidance
1
Step 1: Begin by identifying the Calvin cycle as part of photosynthesis, which is the process plants use to convert light energy into chemical energy.
Step 2: Understand that the Calvin cycle is specifically involved in the synthesis of glucose from carbon dioxide and occurs in the light-independent reactions of photosynthesis.
Step 3: Recall that photosynthesis takes place in the chloroplast, a specialized organelle in plant cells. The chloroplast has distinct regions: the thylakoid membrane, the stroma, and the intermembrane space.
Step 4: Note that the enzymes required for the Calvin cycle are localized in the stroma of the chloroplast. The stroma is the fluid-filled space surrounding the thylakoid membranes, where the light-independent reactions occur.
Step 5: Eliminate the incorrect options: Cytoplasm is outside the chloroplast, the mitochondrial matrix is part of cellular respiration, and the thylakoid membrane is where the light-dependent reactions occur, not the Calvin cycle.