Home Biology Breathing and Exchange of Gases Previous Year Questions What is true about RBCs in humans?
Biology Breathing and Exchange of Gases Previous Year Questions Single Correct MCQ
Published on: August 12, 2026

What is true about RBCs in humans?

A
They carry about 20 to 25 percent of CO 2 .
B
They transport 99.5 per cent of O 2 .
C
They transport about 80 per cent oxygen only and the rest 20 per cent of it is transported in dissolved state in blood plasma.
D
They do not carry O 2 at all.

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