The blood leaving the lungs has all its haemoglobin oxygena…

Biology Breathing and Exchange of Gases Disorder of Respiratory System and Regulation of Respiration Single Correct MCQ

Published by: CGP EDU Academic Team

Published on: August 13, 2026

The blood leaving the lungs has all its haemoglobin oxygenated and gives up oxygen to the tissues because

The tissue can absorb O 2 from oxyhaemoglobin.

O 2 concentration is lower in tissue than in the lungs.

O 2 concentration in tissues is higher and CO 2 concentration is lower as compared to lungs.

Oxyhaemoglobin undergoes reduction.

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