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MCQ Chapter 13 Biology Class 11 Maharashtra Board

Respiration and Energy Transfer

1. What is the primary purpose of respiration in organisms?

Question 1 of 20

2. Which process involves the direct phosphorylation of ADP by transferring a phosphate group from a substrate?

Question 2 of 20

3. Where does oxidative phosphorylation occur?

Question 3 of 20

4. What is the common step in both anaerobic and aerobic respiration?

Question 4 of 20

5. How many ATP molecules are consumed in the preparatory phase of glycolysis?

Question 5 of 20

6. What is the end product of glycolysis?

Question 6 of 20

7. In which phase of glycolysis is fructose 1,6-bisphosphate formed?

Question 7 of 20

8. Which enzyme catalyzes the conversion of glucose to glucose-6-phosphate in glycolysis?

Question 8 of 20

9. What is the role of inorganic phosphate in glycolysis?

Question 9 of 20

10. How many ATP molecules are produced by substrate-level phosphorylation in glycolysis?

Question 10 of 20

11. Which molecule is an isomer of glyceraldehyde-3-phosphate in glycolysis?

Question 11 of 20

12. Which enzyme regulates the conversion of fructose-6-phosphate to fructose-1,6-bisphosphate?

Question 12 of 20

13. What is the net ATP gain from glycolysis per glucose molecule?

Question 13 of 20

14. In anaerobic respiration in muscles, what is pyruvic acid converted to?

Question 14 of 20

15. What gas is produced during alcoholic fermentation in yeast?

Question 15 of 20

16. Which process in yeast converts acetaldehyde to ethanol?

Question 16 of 20

17. Where does the conversion of pyruvic acid to acetyl CoA occur in eukaryotes?

Question 17 of 20

18. Which enzyme complex catalyzes the conversion of pyruvic acid to acetyl CoA?

Question 18 of 20

19. What vitamin is required as a co-enzyme for the pyruvate dehydrogenase complex?

Question 19 of 20

20. What is the first molecule formed in the Krebs cycle when acetyl CoA combines with oxaloacetic acid?

Question 20 of 20

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