Q1. What is the primary role of cyclic photophosphorylation?A. To produce ATPB. To produce NADPHC. To release oxygenD. To split water molecules
Q2. How many turns of the Calvin cycle are required to produce one molecule of glucose?A. 1B. 3C. 6D. 12
Q3. Which of the following is NOT a product of the light-dependent reactions?A. OxygenB. ATPC. NADPHD. Glucose
Q4. Which enzyme catalyzes the first step of the Calvin cycle?A. RuBisCOB. ATP synthaseC. PEP carboxylaseD. NADP reductase
Q5. Which of the following statements about cyclic photophosphorylation is correct?A. It involves both Photosystem I and II.B. It produces both ATP and NADPH.C. Electrons return to Photosystem I after energy transfer.D. Oxygen is released during this process.
Q6. Which pigment plays an accessory role in photosynthesis by transferring energy to chlorophyll a?A. Chlorophyll aB. Chlorophyll bC. RuBisCOD. NADP reductase
Q7. What is the first stable product formed in the Calvin cycle?A. RuBPB. 3-PGA (3-phosphoglyceric acid)C. G3P (Glyceraldehyde-3-phosphate)D. Oxaloacetic acid
Q8. Which enzyme is responsible for the carboxylation of RuBP in the Calvin cycle?A. PEP carboxylaseB. ATP synthaseC. RuBisCOD. NADP reductase
Q9. Which of the following statements about the light-dependent reactions is correct?A. They occur in the stroma.B. NADH is produced.C. Water is split, releasing oxygen.D. Carbon dioxide is fixed.
Q10. Which of the following molecules acts as an electron acceptor in the light reaction?A. RuBPB. NADP+C. ATPD. PEP