Which of the following is the correct pathway of glucose breakdown under…
2022
Which of the following is the correct pathway of glucose breakdown under aerobic respiration?
Answer: C. Glucose → Pyruvic acid → CO₂ + Water — During aerobic respiration, glucose is first broken down into pyruvic acid through glycolysis. In the presence of oxygen, pyruvic acid enters the mitochondria…
- A.
Glucose → Pyruvic acid → Ethanol + CO₂
- B.
Glucose → Lactic acid → CO₂ + Water
- C.
Glucose → Pyruvic acid → CO₂ + Water
- D.
Glucose → Lactic acid → Ethanol + CO₂
Attempted by 98 students.
Show answer & explanation
Correct answer: C
During aerobic respiration, glucose is first broken down into pyruvic acid through glycolysis. In the presence of oxygen, pyruvic acid enters the mitochondria and is completely oxidized through the Krebs cycle and electron transport chain, producing:
Carbon dioxide (CO₂)
Water (H₂O)
Energy (ATP)
Therefore, the correct pathway is:
Glucose → Pyruvic acid → CO₂ + Water