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WAEC Biology 2011 Question 16

Question 16

Excretion

Filtrate in the Bowman's capsule contains vitamins because

  1. A.only a little amount is required by the body.
  2. B.they can be reabsorbed into the blood.
  3. C.they have low molecular weight
  4. D.most of them are fat soluble.
Show the answer and explanation

Answer: C (they have low molecular weight)

Explanation

Ultrafiltration lets small molecules through the glomerulus; vitamins are small, so they pass into the filtrate.