What is the end product of anaerobic respiration?

This question was previously asked in
OTET 2022 (2nd) Exam (Mathematics & Science) Official Paper-II (Held On: 01 July, 2023)
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  1. Pyruvic acid and energy
  2. Alcohol, carbon dioxide and energy
  3. Carbon dioxide and water
  4. Carbon dioxide, water and energy

Answer (Detailed Solution Below)

Option 2 : Alcohol, carbon dioxide and energy
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Detailed Solution

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The correct answer is Alcohol, carbon dioxide and energy.

Concept-

  • An important feature of all living cells is respiration which is related to the liberation of metabolic energy as ATP.
  • Respiration is an amphibolic and exergonic cellular process.
  • Respiration is of two types.
    • Aerobic respiration- with the use of oxygen. Eg plants
    • The equation of Aerobic Respiration
      • Glucose + Oxygen → Carbon dioxide + Water + Energy
    • Anaerobic respiration- without the use of oxygen. Eg yeast
    • The equation of Anaerobic Respiration
      • Glucose → Alcohol + Carbon dioxide + Energy

F1 Utkarsha Singh Anil 16.03.21 D6

Explanation:

  • 2 molecules of ATP are obtained by the anaerobic respiration of one molecule of glucose.
  • Respiration is a glucose degradation mechanism with the aid of molecular oxygen to generate ATP.
  • It requires both glycolysis and phosphorylation.
  • Glycolysis is the first step of glucose degradation that occurs in the absence of oxygen and transforms one glucose molecule into two pyruvate molecules.
  • During this cycle, 4 ATP molecules are generated and 2 ATP molecules are consumed.

So, in anaerobic respiration Alcohol, Carbon dioxide, Energy obtained.

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