Multiple choice

Approximately, how much percentage of the oxygen carried in the blood is bound to hemoglobin?

  1. 90

  2. 92.5

  3. 87

  4. 98.5
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Approximately 98.5% of oxygen in blood is bound to hemoglobin, with only about 1.5% dissolved in plasma. This high hemoglobin binding capacity makes red blood cells efficient oxygen transporters.

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