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JAMB Biology 1983 Question 11

Question 11

Transport in Animals

Which of the following statements is NOT true of mammalian erythrocytes?

  1. A.They have haemoglobin
  2. B.They appear yellow when looked at singly
  3. C.They are disc-shaped
  4. D.The cells are more numerous than leucocytes
  5. E.They have nuclei at maturity.
Show the answer and explanation

Answer: E (They have nuclei at maturity.)

Explanation

Mature mammalian red blood cells lose their nuclei, which leaves more room for haemoglobin. All the other statements are true.