Which organelle is the site of photosynthesis?

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Dive into the VCE Biology Unit 1 AOS 1 Test. Strengthen your exam preparation with ever-enlightening flashcards, detailed multiple-choice questions, comprehensive hints, and thorough explanations. Prepare effectively and ace your test!

Multiple Choice

Which organelle is the site of photosynthesis?

Explanation:
Photosynthesis happens in chloroplasts. These organelles contain chlorophyll, the pigment that captures light energy. Inside, the thylakoid membranes drive the light-dependent reactions, producing ATP and NADPH, while the surrounding stroma carries out the Calvin cycle to synthesize sugars from carbon dioxide. This combination of light capture and sugar-building machinery is unique to chloroplasts, which is why they are the site of photosynthesis in plant cells and some algae. Other organelles have different roles: mitochondria generate ATP through respiration, the nucleus houses genetic material, and the Golgi apparatus processes and ships proteins.

Photosynthesis happens in chloroplasts. These organelles contain chlorophyll, the pigment that captures light energy. Inside, the thylakoid membranes drive the light-dependent reactions, producing ATP and NADPH, while the surrounding stroma carries out the Calvin cycle to synthesize sugars from carbon dioxide. This combination of light capture and sugar-building machinery is unique to chloroplasts, which is why they are the site of photosynthesis in plant cells and some algae. Other organelles have different roles: mitochondria generate ATP through respiration, the nucleus houses genetic material, and the Golgi apparatus processes and ships proteins.

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