Question

Adult human RBCs are enucleated. Which of the following statement(s) is/are the most appropriate explanation for the feature?

(a) They do not need to reproduce

(b) They are somatic cells

(c) They do not metabolize

(d) All their internal space is available for oxygen transport

• A. Only (d)
• B. Only (a)
• C. (a), (c) and (d)
• D. (b) and (c )

Answer 1

The correct option is A

Only (d)

The correct option is A

Explanation of correct option

1. RBCs are constantly synthesized in the bone marrow.
2. After the maturation of the cells, the nucleus is lost by a process called enucleation.
3. More haemoglobin can be accumulated in the enucleated RBCs and thus space is available internally for the transport of more oxygen.
4. RBCs lack cell organelles thus metabolic activity and multiplication are absent in the enucleated cell.

Final answer

Adult human RBCs are enucleated and all their internal space is available for oxygen transport.