Which organelle conducts photosynthesis in plants and algae, and where do light-dependent reactions occur?

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Multiple Choice

Which organelle conducts photosynthesis in plants and algae, and where do light-dependent reactions occur?

Explanation:
Photosynthesis happens in chloroplasts, the organelles in plant and algal cells that capture light energy. The light-dependent reactions occur on the thylakoid membranes inside those chloroplasts, where chlorophyll and other pigments, along with the photosystems and electron transport chain, use light to split water, generate ATP and NADPH, and release oxygen. The Calvin cycle, which uses that energy, takes place in the stroma. Mitochondria carry out cellular respiration, not photosynthesis, and their cristae are folds of the inner membrane. The nucleus and nucleolus aren’t involved in photosynthesis either.

Photosynthesis happens in chloroplasts, the organelles in plant and algal cells that capture light energy. The light-dependent reactions occur on the thylakoid membranes inside those chloroplasts, where chlorophyll and other pigments, along with the photosystems and electron transport chain, use light to split water, generate ATP and NADPH, and release oxygen. The Calvin cycle, which uses that energy, takes place in the stroma. Mitochondria carry out cellular respiration, not photosynthesis, and their cristae are folds of the inner membrane. The nucleus and nucleolus aren’t involved in photosynthesis either.

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