passwella.
Menu

JAMB Biology 2006 Question 1

Question 1

Food Substances and Enzymes

Night-blindness results from a deficiency of

  1. A.vitamin E
  2. B.vitamin A
  3. C.vitamin K
  4. D.vitamin C
Show the answer and explanation

Answer: B (vitamin A)

Explanation

Vitamin A is needed to make the light-sensitive pigment in the rods of the retina. Without it, a person cannot see well in dim light.