Q2. Which of the following is INCORRECT regarding the Krebs cycle?A. It occurs in the mitochondrial matrix.B. It produces NADH and FADH₂.C. It directly uses glucose as a substrate.D. It releases carbon dioxide as a byproduct.
Q3. Which compound is formed when pyruvate undergoes alcoholic fermentation?A. Lactic acidB. EthanolC. Acetyl-CoAD. Oxaloacetate
Q4. Which of the following is INCORRECT about aerobic respiration?A. It requires oxygen.B. It occurs only in prokaryotic cells.C. It involves glycolysis, the Krebs cycle, and the Electron Transport Chain.D. It produces more ATP than anaerobic respiration.
Q5. Which of the following statements about oxidative phosphorylation is CORRECT?A. It occurs in the inner mitochondrial membrane.B. It occurs in the cytoplasm.C. It does not require oxygen.D. It is part of glycolysis.
Q6. Which of the following statements about ATP synthase is INCORRECT?A. It is located in the inner mitochondrial membrane.B. It synthesizes ATP using the proton gradient.C. It requires the presence of NADH.D. It plays a role in oxidative phosphorylation.
Q7. Which of the following is NOT a reason why plants do not require a specialized respiratory system?A. They have a lower energy demandB. Gaseous exchange occurs through stomata and lenticelsC. They do not require oxygen for respirationD. Each plant cell carries out its own respiration
Q8. Which of the following statements about fermentation is INCORRECT?A. It occurs in the absence of oxygen.B. It takes place in the mitochondria.C. It produces ethanol or lactic acid.D. It generates much less ATP than aerobic respiration.
Q9. Which compound serves as a common intermediate between carbohydrate, lipid, and protein metabolism?A. GlucoseB. Acetyl-CoAC. Pyruvic acidD. Oxaloacetic acid
Q10. Which enzyme catalyzes the conversion of pyruvate to ethanol in anaerobic respiration?A. Lactate dehydrogenaseB. Pyruvate decarboxylaseC. HexokinaseD. Aldolase