Q1. How many molecules of ATP are directly synthesized in one turn of the Krebs cycle?A. 1B. 2C. 3D. 4
Q2. Which of the following is INCORRECT about the Electron Transport Chain (ETC)?A. It takes place in the inner mitochondrial membrane.B. Oxygen is the final electron acceptor.C. It generates ATP through substrate-level phosphorylation.D. It creates a proton gradient across the membrane.
Q3. What is the final electron acceptor in the electron transport system of respiration?A. Carbon dioxideB. NADHC. OxygenD. Water
Q4. Which of the following intermediates of respiration is involved in amino acid synthesis?A. PyruvateB. CitrateC. α-Ketoglutaric acidD. Fumarate
Q5. What is the net ATP gain from one molecule of glucose in aerobic respiration?A. 2 ATPB. 4 ATPC. 38 ATPD. 32 ATP
Q6. Which of the following statements about ATP is CORRECT?A. ATP is an energy-storing molecule.B. ATP is only produced during glycolysis.C. ATP is a structural component of DNA.D. ATP does not participate in cellular processes.
Q7. Which enzyme catalyzes the conversion of fumaric acid to malic acid in the Krebs cycle?A. FumaraseB. Succinate dehydrogenaseC. AconitaseD. Malate dehydrogenase
Q8. Which of the following statements about the Electron Transport Chain (ETC) is CORRECT?A. ETC occurs in the cytoplasm.B. Oxygen is the final electron acceptor in the ETC.C. ETC generates ATP through substrate-level phosphorylation.D. ETC does not involve a proton gradient.
Q9. In plants, the majority of ATP is generated during which stage of respiration?A. GlycolysisB. Krebs cycleC. Electron Transport ChainD. Fermentation
Q10. Which of the following statements about aerobic respiration is INCORRECT?A. It requires oxygenB. It produces ATPC. It occurs in the cytoplasm onlyD. It involves the Electron Transport Chain