Adult human RBCs are anucleate. Which of the following statement(s) is/are the most appropriate explanation for this feature? (1) They do not need to reproduce. (2) They are somatic cells. (3) They do not metabolize. (4) All their internal space is available for oxygen transport.
Correct answer: D. (1) (2) (3) (4)
- A. Only (1)
- B. (1), (3) and (4)
- C. (2) and (3)
- D. (1) (2) (3) (4)
Explanation
Red blood cells of adult humans do not have cell organelles including nucleus, Golgi bodies, mitochondria, ribosomes, etc. It increases the surface area of RBCs and enables them to contain more haemoglobin (the oxygen carrying pigment. Option D is correct.
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