Respiration Questions, Paper 01, Subject: Biology, Topic: Respiration, Type: MCQs (Multiple Choice Questions)
| Questions | Answers |
| 1. In respiration enregy not converted in ATP is
(A) Liberated along with CO2 (B) Converted into heat (C) Transferred to organic compounds (D) Transferred to water |
Answer: (B) |
| 2. One gram mole of glucose on complete oxidation to CO2 and H2O produces about
(A) 686,000 cal (B) 6,860 cal (C) 6,860,000 cal (D) 68,600 cal |
Answer: (A) |
| 3. In respiration, pyruvic acid is
(A) Formed only when the cell is with mitochondria (B) Formed only when oxygen is available (C) Formed only when cell is performing aerobic respiration (D) Commonly formed as intermediate product of aerobic and anaerobic respiration |
Answer: (D) |
| 4. What ultimately occurs during respiration is
(A) Synthesis of ATP (B) Electron transport (C) break down of ATP (D) capture of solar energy |
Answer: (A) |
| 5. Number of steps involved in release of CO2 during Kreb’s cycle are
(A) 1 (B) 2 (C) 6 (D) 12 |
Answer: (B) |
| 6. RQ is
(A) C/N (B) CO2/O2 (C) O2/CO2 (D) N/C |
Answer: (B) |
| 7. Mitochondria do not occur in
(A) Ferns (B) Bacteria (C) Green algae (D) Brown algae |
Answer: (B) |
| 8. Mitochondrial component connected with ATP synthesis
(A) Inner membrane (B) Outer membrane (C) Matrix (D) F0 – F1 particles |
Answer: (D) |
| 9. Inner membrane involutions of a mitochondria are called
(A) Lamellae (B) Cristae mitochondriales (C) Thylakoid (D) Tubules |
Answer: (B) |
| 10. Mitochondrial criste are sites of
(A) Kreb’s cycle (B) Oxidation reduction reaction (C) Protein synthesis (D) Lipid synthesis |
Answer: (B) |
| 11. Mitochondria are self replication organelles as they have
(A) Thylakoids (B) Oxysomes (C) Ribosomes (D) DNA |
Answer: (D) |
| 12. How many ATP are produced from NADH2 during aerobic respiration
(A) 30 (B) 8 (C) 34 (D) 2 |
Answer: (B) |
| 13. The intermediate product of glycolysis which undergoes lysis or splitting is
(A) Fructose 1-6 diphosphate (B) Dihydroxyacetone 3 phosphate (C) Glucose – 6 – phosphate (D) Glyceraldehyde – 3 – phosphate |
Answer: (A) |
|
14. Number of carbon atoms present in citric acid, oxaloacetic acid pyruvic acid are respectively (A) 6, 3 and 3 (B) 6, 4 and 3 (C) 5, 4 and 3 (D) 6, 4 and 2 |
Answer: (B) |
| 15. Removal of hydrogen and CO2 from substrate is called
(A) Oxidation (B) Decarboxylation (C) Reductive carboxylation (D) Oxidative decarboxylation |
Answer: (D) |
| 16. Aerobic respiration of one glucose produces
(A) 12 NADH + 2FADH2 + 38 ATP (B) 12 NADH + 30 ATP + H2O (C) 8 NADH + 2FADH2 + 2ATP (D) 10 NADH2 + 2 FADH2 + 2 ATP + 2 GTP |
Answer: (D) |
| 17. ETC and TCA enzyme soccurs in
(A) Endoplasmic reticulum (B) Ribosomes (C) Mitochondria (D) Cytoplasm |
Answer: (C) |
| 18. End products of aerobic respiration are
(A) Sugar and oxygen (B) Water and energy (C) Carbon dioxide and energy (D) Carbon dioxide, water and energy |
Answer: (D) |
|
19. Incomplete oxidation of glucose into pyruvic acid with several intermediate steps is known as (A) HMS-pathway (B) TCA pathway (C) Glycolysis (D) Kreb’s cycle |
Answer: (C) |
| 20. Kreb’s cycle begins with the reaction
(A) Citric acid + Acetyl CoA (B) OAA + Acetyl Co-A (C) OAA + Citric acid (D) OAA + Pyruvic acid |
Answer: (B) |
| 21. Formation of lactic acid from pyruvic acid requires
(A) Reduction (B) Oxidation (C) Decarboxylation (D) Hydration |
Answer: (A) |
|
22. When a pair of electron from NADPH2 is transported through respiration ETS, it results in the formation of (A) 5 molecules of ATP (B) 4 molecules of ATP (C) 3 molecules of ATP (D) 2 molecules of ATP |
Answer: (C) |
| 23. Oxidation step of glycolysis is
(A) 1,3 di PGA ¾® 3 PGA (B) 3 PGAL ¾® 1, 3 diPGA (C) PGA ¾® PEP (D) Fructose 1, 6 diphosphate ¾® PGAl + DHAP |
Answer: (B) |
| 24. Which of the following process is used in the conversion of pyruvate to acetyl CoA
(A) Oxidative decarboxylation (B) Oxidative dehydrogenation (C) Oxidation phosphorylation (D) Oxidation dehydration |
Answer: (A) |
| 25. Enzymes taking part in glycolysis are present in
(A) Vacuole (B) Mitochondria (C) Cytoplasm (D) Both (B) and (C) |
Answer: (C) |