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Multiple Choice
In which organelle does photosynthesis take place?
A
Nucleus
B
Chloroplast
C
Ribosome
D
Mitochondrion
Verified step by step guidance
1
Step 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.
Step 2: 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.
Step 3: Compare the functions of the other organelles listed in the problem. The nucleus stores genetic material and regulates cellular activities, the ribosome synthesizes proteins, and the mitochondrion is responsible for cellular respiration and energy production.
Step 4: Recognize that the chloroplast is uniquely equipped for photosynthesis due to its structure, including thylakoid membranes where the light-dependent reactions occur and the stroma where the Calvin cycle takes place.
Step 5: Conclude that the correct answer is 'Chloroplast' because it is the organelle specifically designed for photosynthesis, unlike the nucleus, ribosome, or mitochondrion.