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JAMB Biology 1984 Question 18

Question 18

Respiration

Anaerobic respiration in yeast produces

  1. A.carbondioxide and ethanol
  2. B.carbondioxide and water
  3. C.carbondioxide and oxygen
  4. D.carbondioxide and glucose
  5. E.ethanol and water
Show the answer and explanation

Answer: A (carbondioxide and ethanol)

Explanation

Without oxygen, yeast ferments glucose into ethanol (alcohol) and carbon dioxide, releasing a little energy.