Q. Which fact suggests that most oxygen is transported from lungs to the tissues combined with haemoglobin rather than dissolved in blood plasma?
A) Oxygen carrying capacity of whole blood is much higher than that of plasma and oxygen content of blood leaving the lungs is greater than that of blood entering the lungs
B) Haemoglobin can combine with oxygen
C) Oxyhaemoglobin can dissociate into haemoglobin and oxygen
D) Increase in carbon dioxide concentration decreases the oxygen affinity of haemoglobin
Explanation
Oxygen carrying capacity of whole blood is much higher than that of plasma and oxygen content of blood leaving the lungs is greater than that of blood entering the lungs thus, most oxygen is transported from lungs to the tissue combined with haemoglobin rather than dissolved in blood plasma.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.