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JAMB Biology 2013 Question 2

Question 2

Food Substances and Enzymes

The process in which complex substances are broken down into simpler ones is referred to as

  1. A.catabolism.
  2. B.metabolism.
  3. C.tropism.
  4. D.anabolism.
Show the answer and explanation

Answer: A (catabolism.)

Explanation

Catabolism is the breakdown part of metabolism (e.g. respiration), while anabolism builds complex substances up. Tropism is a plant growth movement, not a chemical process.