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WAEC Biology 2025 Question 1

Question 1

Animal Nutrition

Chemical digestion in organisms is the

  1. A.breakdown of starch into carbohydrates.
  2. B.build up of simple soluble molecules into complex insoluble molecules.
  3. C.breakdown of complex molecules into simple molecules.
  4. D.build up of simple insoluble molecules into complex soluble molecules.
Show the answer and explanation

Answer: C (breakdown of complex molecules into simple molecules.)

Explanation

Chemical digestion uses enzymes to break large, complex food molecules into small, simple ones that can be absorbed.