Hemoglobin A) combines preferentially with O₂ over any other substance B) when combined with carbon dioxide, is known as carboxyhemoglobin C) plays a critical role in determining the amount of O₂ that is exchanged between alveoli and blood because it acts as a storage depot, removing dissolved O₂ from the blood and keeping $\mathrm { P } _ { 0 _ { 2 } }$ low by allowing net diffusion of O₂ to continue until the hemoglobin is completely saturated D) combines preferentially with O₂ over any other substance, and when combined with carbon dioxide, is known as carboxyhemoglobin E) all of these

Question

Quizplus · Accepted Answer

Hemoglobin acts as a storage depot for oxygen, allowing for continued diffusion of O2 by keeping partial pressure low until saturation. Carboxyhemoglobin refers to hemoglobin bound to carbon monoxide, not carbon dioxide.

Hemoglobin A) Combines Preferentially with O2 Over Any Other Substance P02\mathrm { P } _ { 0 _ { 2 } }P02​​

Hemoglobin
A) Combines Preferentially with O₂ Over Any Other Substance $\mathrm { P } _ { 0 _ { 2 } }$