QuestenaPractice that shows what to review next
SearchCreate a test
Question 9

Which pairing explains how most oxygen is transported in blood?

  1. Plasma destroys oxygen before transport.
  2. Platelets bind nearly all circulating oxygen.
  3. White blood cells digest oxygen for tissues.
  4. Hemoglobin in red blood cells binds oxygen.Correct answer

Explanation

Red blood cells contain hemoglobin, a protein that reversibly binds oxygen and carries most of it through the bloodstream. Platelets specialize in clotting, so they are not the principal oxygen carriers.

Continue with this test

Start practice
Understand this topic (≈5 min)Back to test
Question 9: Which pairing explains how most oxygen is transported in… · Human Body Systems · Questena