Q1. Which part of a plant mainly carries out respiration?A. LeavesB. StemsC. RootsD. All living cells
Q2. How many molecules of ATP are produced from one molecule of glucose during fermentation?A. 2B. 4C. 18D. 38
Q3. Which of the following statements about glycolysis is INCORRECT?A. Glycolysis takes place in the mitochondria.B. It involves the breakdown of glucose to pyruvate.C. ATP is both utilized and generated in glycolysis.D. Glycolysis is a common pathway for both aerobic and anaerobic respiration.
Q4. Which of the following statements about the link reaction is INCORRECT?A. It occurs in the mitochondrial matrix.B. It converts pyruvate into Acetyl-CoA.C. It generates ATP directly.D. It produces NADH as a byproduct.
Q5. What is the fate of pyruvate in anaerobic conditions in muscle cells?A. Converted to ethanolB. Converted to Acetyl-CoAC. Converted to lactic acidD. Used in the Electron Transport Chain
Q6. Which of the following is the first step of cellular respiration?A. Krebs cycleB. GlycolysisC. Electron Transport ChainD. Fermentation
Q7. What is the role of Coenzyme A in cellular respiration?A. Acts as the final electron acceptorB. Transfers acetyl group to the Krebs cycleC. Synthesizes ATP in glycolysisD. Acts as an enzyme in the Electron Transport Chain
Q8. Which molecule is formed at the end of glycolysis?A. Acetyl-CoAB. Lactic acidC. Pyruvic acidD. Citric acid
Q9. Which of the following is NOT a step in aerobic respiration?A. GlycolysisB. FermentationC. Krebs’ cycleD. Electron Transport Chain
Q10. Which component of the Electron Transport Chain transfers electrons from complex III to complex IV?A. UbiquinoneB. Cytochrome cC. ATP synthaseD. NADH dehydrogenase