When Oxygen Is Not Bound to the Iron Molecule of Hemoglobin

question 23

Multiple Choice

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).

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