Aerobic Respiration MCQ with Answers Pdf

Multiple Choice Questions on Aerobic Respiration

1. Where in the cell most of the aerobic respiration takes place?

A. Mitochondria

B. Nucleus

C. Ribosome

D. Cytoplasm

Answer: A


2. Oxygen in CO2 released during aerobic respiration_________

A. All from oxygen

B. All from water

C. All from glucose

D. from glucose and water

Answer: D


3. During aerobic respiration, the site where sugars are converted to pyruvate is______

A. cytosol

B. mitochondrial outer membrane

C. mitochondrial inner membrane

D. mitochondrial matrix

Answer: A


4. The end products of glucose produced by aerobic respiration in cells are________

A. CO 2

B. H 2 O

C. Both A and B

D. Lactic acid

Answer: C


5. What is aerobic respiration?

A. Partial oxidation of glucose

B. Incomplete oxidation of glucose

C. Complete oxidation of organic substances

D. Complete oxidation of only glucose

Answer : C


6. The phase of aerobic respiration that produces the most ATP is________

A. Glucose is broken down into pyruvate

B. Pyruvate is decomposed into CO2 and [H]

C. When CO2 is released

D. When [H] and O 2 combine to synthesize water

Answer: D


7. Which of the following statements is incorrect regarding the characteristics of aerobic respiration (compared to anaerobic respiration):

A. Requires multiple enzymes to participate

B. release carbon dioxide

c. Incomplete decomposition of organic matter

D. generate large amounts of ATP

Answer: C


8. Where does aerobic respiration usually takes place?

A. Lower zebras

B. Higher organisms

C. Prokaryotes

D. Only unicellular eukaryotes

Answer: B


9. During aerobic respiration, the role of oxygen is_______

A. Combines with carbon in glucose to form CO 2

B. Combine with [H] to form water

C. Involved in the catalysis of enzymes

D. Oxidation of glucose to form pyruvate

Answer: B


10. During aerobic respiration, carbon dioxide is produced by _________

A. In the cytoplasm, one glucose forms two pyruvates

B. In mitochondria, pyruvate is completely oxysomed and decomposed

C. In mitochondria, the [H] produced is delivered to oxygen while

D. In the cytoplasm, glucose is broken down into alcohol

Answer: B


11. What is a product of aerobic respiration?

A. CO 2

B. H 2 O

C. Both A and B

D. Lactic acid

Answer: C


12. Which of the following statements is incorrect about the glycolysis in which 1 molecule of glucose is decomposed into 2 molecules of pyruvate in living cells________

A. It can be carried out in both prokaryotic cells and eukaryotic cells

B. Both in mitochondria and in the cytoplasmic matrix

C. It can be carried out either under aerobic conditions or under anaerobic conditions

D. It can be carried out both under light conditions and without light conditions

Answer: B


13. Which of the following is true for aerobic respiration in humans?

A. Glucose + water = carbon dioxide + water

B. Glucose + oxygen = Carbon dioxide + water

C. Glucose = Carbon dioxide + water

D. None of the mentioned

Answer: B


14. During the breakdown of glucose into pyruvate in the cytosol, which of the following statements is true________

A. is anaerobic respiration

B. It needs to be carried out under aerobic conditions

C. Does not produce CO 2

D. Does not produce ATP

Answer: C


15. During aerobic respiration, the production of CO2 and the participation of oxygen take place in_______

A. Stage 1 and Stage 2

B. The second and third stages

C. The first and third stages

D. O 2 participates in the production of CO 2 , both in the third stage

Answer: B


16. During aerobic respiration, the oxygen entering the cell will________.

① combine with hydrogen to form water

② combine with carbon to generate carbon dioxide

③ be consumed in mitochondria

④ consumed in mitochondria and cytoplasm

A. ①④

B. ①③

C. ②③

D. ②④

Answer: B


17. The most energy-releasing stage of aerobic respiration, the chemical reaction occurs in_________

A. Cytoplasmic matrixB

B. mitochondrial matrix

C. mitochondrial inner membrane

D. mitochondrial outer membrane

Answer: C


18. Compare the aerobic and anaerobic respiration of plants, which is correct________

A. Glucose is the main energy material for aerobic respiration, not the main energy material for anaerobic respiration

B. CO2 is a product of aerobic respiration, not anaerobic respiration

C. Aerobic respiration releases a lot of energy, and anaerobic respiration can release a lot of energy

D. Aerobic respiration produces reduced hydrogen, and anaerobic respiration can also produce reduced hydrogen

Answer: D


19. The energy released by aerobic respiration of a glucose molecule is m, of which 40% is used to convert ADP into ATP. If the energy contained in a high-energy phosphate bond is n, the number of ATP molecules produced by a glucose molecule in aerobic respiration is_________

A. 2n/5m

b. 2m/5n

C. n/5m

D. m/5n

Answer: B


20. In the process of aerobic respiration, the specific places where glucose is decomposed into pyruvate and pyruvate into carbon dioxide are respectively

A. The nucleus and cytoplasm

B. Cytoplasmic and mitochondrial matrix

C. Cytoplasmic matrix and chloroplast inner membrane

D. Cytoplasmic matrix and cristae within mitochondria

Answer: B

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