NEET 2017
- Exam
- NEET
- Year
- 2017
- Subject
- Zoology
- Chapter
- Body Fluids and Circulation
NEET 2017 · Zoology · Body Fluids and Circulation
Adult human RBCs are enucleate. Which of the following statement(s)...
Adult human RBCs are enucleate. Which of the following statement(s) most appropriate explanation for this feature?
(i) They do not need to reproduce
(ii) They are somatic cells
(iii) They do not metabolize
(iv) All their internal space is available for oxygen transport
(i) They do not need to reproduce
(ii) They are somatic cells
(iii) They do not metabolize
(iv) All their internal space is available for oxygen transport
Options
- AOnly (iv)
- BOnly (i)
- C(i), (iii) and (iv)
- D(ii) and (iii)
Correct answer
A. Only (iv)
Step-by-step solution
In most of the mammals including humans, RBCs are biconcave and are enucleated. Due to lack of nucleus and cell organelles, they provide more space for oxygen carrying pigment - Haemoglobin. They respire anaerobically due to the absence of mitochondria and do not use up the oxygen they carry.