alleryStart learning →The A and B antigens of the ABO group are what kind of molecule?
APhospholipids
BGlycoproteins
CNucleic acids
DSteroid lipids
Answer & Solution
Correct answer: B. Glycoproteins
1. The ABO name uses three letters but designates the presence or absence of only two antigens, A and B.
2. Both of those antigens are glycoproteins.
3. Antigens in general are usually large proteins, though they may also be carbohydrates, lipids or nucleic acids.
4. For the ABO group specifically the answer is the glycoprotein, so the broader possibilities are distractors here.
_Source: OpenStax Anatomy and Physiology (CC BY 4.0), Ch 18 "The Cardiovascular System: Blood", section 18.6 Blood Typing_
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