Light-dependent reactions Quiz
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5 questions, one answer each
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1. Where does non-cyclic photophosphorylation take place?
- A. Stroma
- B. Thylakoid membranes
- C. Outer envelope of the chloroplast
- D. Cytoplasm
2. What is the source of the electrons that replace those lost from photosystem II?
- A. NADP
- B. Carbon dioxide
- C. Photosystem I
- D. Water
3. Which statement about cyclic photophosphorylation is correct?
- A. It involves photosystem I only and produces ATP only
- B. It produces oxygen and reduced NADP
- C. It involves photosystem II only
- D. It produces reduced NADP but no ATP
4. What is the role of the electron transport chain in making ATP?
- A. It splits water
- B. It accepts hydrogen to form reduced NADP
- C. It releases energy that is used to pump protons across the thylakoid membrane
- D. It absorbs light energy
5. A herbicide stops electrons leaving photosystem II. Which process will stop first?
- A. Absorption of light by photosystem I
- B. Cyclic photophosphorylation
- C. Release of oxygen
- D. Excitation of electrons in photosystem I