What organelle is responsible for photosynthesis in plant cells?

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Multiple Choice

What organelle is responsible for photosynthesis in plant cells?

Photosynthesis happens in chloroplasts, specialized plant cell organelles that contain chlorophyll to capture light. Within chloroplasts, the light-dependent reactions take place on the thylakoid membranes, using light energy to split water and generate ATP and NADPH while releasing oxygen. The Calvin cycle runs in the surrounding stroma, using that ATP and NADPH to fix carbon dioxide into sugars like glucose. So the chloroplast is the site where light energy is converted into chemical energy stored in sugars. Other organelles serve different roles: mitochondria produce ATP through respiration, the nucleus holds genetic information, and ribosomes synthesize proteins.

Photosynthesis happens in chloroplasts, specialized plant cell organelles that contain chlorophyll to capture light. Within chloroplasts, the light-dependent reactions take place on the thylakoid membranes, using light energy to split water and generate ATP and NADPH while releasing oxygen. The Calvin cycle runs in the surrounding stroma, using that ATP and NADPH to fix carbon dioxide into sugars like glucose. So the chloroplast is the site where light energy is converted into chemical energy stored in sugars. Other organelles serve different roles: mitochondria produce ATP through respiration, the nucleus holds genetic information, and ribosomes synthesize proteins.

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