alleryStart learning →The end product of glycolysis is
- lactic acid
- ethanol
- pyruvate
- acetyl-CoA
Show answer and solution
Correct answer: C. pyruvate
Glycolysis ends with 2 pyruvate molecules per glucose.
The next step depends on oxygen and cell type.
M.Sc Microbiology Respiration in Plants — practice questions
Explore 6 free Respiration in Plants questions in M.Sc Microbiology Biology. Open each question or exercise to read its content, reference answers and available explanation.
Practise Respiration in Plants with Quill →Respiration in Plants questions and exercises with answers
Showing questions 1–6 of 6.
The end product of glycolysis isRead the answer and worked solution →Net ATP yield per glucose from glycolysis alone isRead the answer and worked solution →Alcoholic fermentation produces, besides ethanol,Read the answer and worked solution →The final electron acceptor in aerobic respiration isRead the answer and worked solution →The total ATP yield per glucose by aerobic respiration is approximatelyRead the answer and worked solution →The Krebs cycle takes place in theRead the answer and worked solution →
Worked practice questions
Net ATP yield per glucose from glycolysis alone is
- 1 ATP
- 2 ATP
- 4 ATP
- 36 ATP
Show answer and solution
Correct answer: B. 2 ATP
Invests 2 ATP, produces 4
→ net 2. Plus 2 NADH (used later if O₂ is available).
Full aerobic respiration extracts ~36-38 ATP.
Alcoholic fermentation produces, besides ethanol,
- lactic acid
- CO₂
- water
- O₂
Show answer and solution
Correct answer: B. CO₂
Pyruvate → acetaldehyde + CO₂, then acetaldehyde → ethanol.
The CO₂ makes bread rise.
**Net:** glucose → 2 ethanol + 2 CO₂ + 2 ATP.
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