When oxygen is not bound to the iron molecule of hemoglobin, the iron molecule is in the ferrous (Fe²⁺) charge state, rather than when oxygen changes the charge of iron to the ferric (Fe³⁺) state. A dangerous form of hemoglobin that is unable to oxidize is: A) methemoglobin (MetHb). B) deoxyhemoglobin (DeoHb). C) oxyhemoglobin (OxHb). D) carboxyhemoglobin (COxHb).

Question

Quizplus · Accepted Answer

Methemoglobin (MetHb) is a dangerous form of hemoglobin that is unable to oxidize, meaning that the iron molecule is in the ferric state (Fe3+), rather than the ferrous state (Fe2+), which is necessary for oxygen binding. This results in a decreased ability of the blood to transport oxygen, which can lead to tissue hypoxia and cell death.

When Oxygen Is Not Bound to the Iron Molecule of Hemoglobin