Which statement about methemoglobin is true?

Question

Quizplus · Accepted Answer

Methemoglobin occurs when the iron atoms within the hemoglobin molecule are oxidized from the ferrous state to the ferric state.Methemoglobin does not carry oxygen.The most common abnormality involving hemoglobin is a decrease in amount.This can be an acute or a chronic situation (anemia).Abnormal hemoglobin structure also can pose problems,such as hemoglobin S,which is responsible for sickle cell anemia.Hemoglobin carries approximately 97% of the total amount of oxygen held within the bloodstream.

Which Statement About Methemoglobin Is True