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Multiple Choice
In what organelle does photosynthesis occur?
A
Nucleus
B
Ribosome
C
Mitochondrion
D
Chloroplast
Verified step by step guidance
1
Understand the process of photosynthesis: Photosynthesis is the process by which plants, algae, and some bacteria convert light energy into chemical energy stored in glucose. This process requires light, water, and carbon dioxide.
Identify the organelle responsible for photosynthesis: Photosynthesis occurs in the chloroplast, an organelle found in plant cells and some protists. Chloroplasts contain chlorophyll, a pigment that captures light energy.
Compare the options provided: The nucleus is responsible for storing genetic material, the ribosome is involved in protein synthesis, and the mitochondrion is the site of cellular respiration. None of these are involved in photosynthesis.
Focus on the chloroplast: Chloroplasts have a double membrane structure and contain thylakoids, where the light-dependent reactions of photosynthesis occur, and the stroma, where the light-independent reactions (Calvin cycle) take place.
Conclude that the correct answer is chloroplast: Based on the function and structure of the chloroplast, it is the organelle where photosynthesis occurs, making it the correct answer.