Question

During oxygen transport, the oxyhaemoglobin at the tissue level liberates oxygen to the cells because in tissue:

• A. ${\text{O}}_2$ concentration is high and ${\text{CO}}_2$ is low
• B. ${\text{O}}_2$ concentration is low and ${\text{CO}}_2$ is high
• C. ${\text{O}}_2$ tension is high and ${\text{CO}}_2$ tension is low
• D. ${\text{O}}_2$ tension is low and ${\text{CO}}_2$ tension is high

Answer 1

The correct option is D ${\text{O}}_2$ tension is low and ${\text{CO}}_2$ tension is high

Due to low oxygen tension and high carbon dioxide, oxyhaemoglobin at the tissue level liberates the oxygen to the cells. Oxygen dissociates from the haemoglobin and diffuses into tissue.