Which organelle is the site of photosynthesis?

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Prepare for the VCE Biology Unit 1 Exam with flashcards and multiple choice questions. Each question includes hints and explanations to ensure you understand the concepts thoroughly. Boost your confidence and readiness for the 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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