What term describes the photosynthetic membranes where light-dependent reactions occur?

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Multiple Choice

What term describes the photosynthetic membranes where light-dependent reactions occur?

Explanation:
Thylakoids are the membrane-bound compartments inside chloroplasts where light-dependent reactions occur. These membranes host the photosystems, the electron transport chain, and ATP synthase. Light energy drives electron flow through the chain, pumping protons into the thylakoid lumen and creating a proton gradient. When protons flow back through ATP synthase, ATP is produced, and electrons reduce NADP+ to NADPH. The surrounding fluid, the stroma, is where the Calvin cycle happens, while grana are stacks of these membranes.

Thylakoids are the membrane-bound compartments inside chloroplasts where light-dependent reactions occur. These membranes host the photosystems, the electron transport chain, and ATP synthase. Light energy drives electron flow through the chain, pumping protons into the thylakoid lumen and creating a proton gradient. When protons flow back through ATP synthase, ATP is produced, and electrons reduce NADP+ to NADPH. The surrounding fluid, the stroma, is where the Calvin cycle happens, while grana are stacks of these membranes.

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