In a chloroplast, the light dependent reactions take place in the
Correct answer: B. thylakoid membranes of the grana
- A. stroma
- B. thylakoid membranes of the grana
- C. outer membrane
- D. intermembrane space
Explanation
Chlorophyll and the electron carriers are embedded in the thylakoid membranes, which are stacked into grana to give the largest possible area for absorbing light. The stroma is the surrounding fluid, and it is where the light independent reactions fix carbon dioxide using the ATP and reduced NADP made in the membranes. Dividing the organelle this way keeps the two stages physically separate.
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About Cytoplasmic Organelles
Cytoplasmic organelles are the specialized structures suspended in cytoplasm, including mitochondria, ribosomes, endoplasmic reticulum, Golgi apparatus, lysosomes, vacuoles and centrosomes. Questions compare their structures and functions in animal and plant cells, including chloroplasts and the role of the endomembrane system in transport and secretion.
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