Which of the Following Is Correct Concerning Fetal Hemoglobin

question 42

Multiple Choice

Which of the following is correct concerning fetal hemoglobin?

• A) Fetal hemoglobin is composed of two α and two γ subunits.
• B) Fetal hemoglobin binds 2,3-BPG more tightly than normal adult hemoglobin.
• C) Fetal hemoglobin binds oxygen less than HbA at all pO₂.
• D) Fetal hemoglobin does not exist in the T-form.
• E) None of the answers is correct.

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Definitions:

Excessive Fearfulness

An overwhelming and often irrational sense of fear that exceeds normal anxiety levels and can interfere with daily activities.

Unrealistic Worry

Excessive concerns or fears about events or situations that are highly unlikely to occur or are out of proportion to their actual risk.

Agoraphobia

An intense fear of being in a situation from which escape is not possible or in which help would not be available if one experienced overwhelming anxiety or a panic attack.

Fear

An emotional response to a perceived threat that prepares the body to either fight the threat or flee from it.