Which of the following statements about oxygen transport is true?
Statement 1: Most of the oxygen is transported by RBCs.
Statement 2: Oxygen binds irreversibly to hemoglobin.
Statement 3: Hemoglobin can carry up to four molecules of oxygen.
Choose the correct option:
1
1 and 2
2
1 and 3
3
2 and 3
4
All of the above