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JAMB Biology 2006 Question 12

Question 12

Respiration

The formation of water in the tissue respiration results from the

  1. A.breakdown of water molecules
  2. B.reduction of oxygen by hydrogen
  3. C.reduction of carbon(IV) oxide
  4. D.combination of water molecules
Show the answer and explanation

Answer: B (reduction of oxygen by hydrogen)

Explanation

At the end of aerobic respiration, hydrogen removed from food combines with oxygen. This reduces the oxygen to water.