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Multiple Choice
The photosynthetic membranes are found in the _____ in plant cells.
A
mitochondria
B
thylakoids
C
cytosol
D
nucleus
Verified step by step guidance
1
Understand the context: The question is asking about the location of photosynthetic membranes in plant cells. Photosynthesis is the process by which plants convert light energy into chemical energy, and it occurs in specific organelles.
Recall the structure of chloroplasts: Chloroplasts are the organelles in plant cells where photosynthesis takes place. Inside chloroplasts, there are structures called thylakoids, which are membrane-bound compartments.
Identify the role of thylakoids: Thylakoids contain the photosynthetic pigments (like chlorophyll) and are the site of the light-dependent reactions of photosynthesis. These reactions involve capturing light energy to produce ATP and NADPH.
Eliminate incorrect options: Mitochondria are involved in cellular respiration, not photosynthesis. The cytosol is the fluid part of the cytoplasm, and the nucleus is the control center of the cell, neither of which are involved in photosynthesis.
Conclude that the photosynthetic membranes are found in the thylakoids within the chloroplasts, as they are specifically designed for the light-dependent reactions of photosynthesis.