Question

Percentage of haemoglobin in RBC is

• A. 10%
• B. 20%
• C. 35%
• D. 48%

Answer 1

Answer: (C)

35%

Percentage of haemoglobin in RBC is around 34%. In mammals, the protein makes up about 96% of the red blood cells dry content, and around 34% of the total content. Hemoglobin has an oxygen-binding capacity of 1.34 mL $O_2$ per gram, which increases the total blood oxygen capacity seventy-fold compared to dissolved oxygen in the blood. The mammalian haemoglobin molecule can bind up to four oxygen molecules.