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An individual with A antigens on their RBCs but no B antigens has which ABO blood type?

A.

Type AB

B.

Tуре O

C.

Either Type A or Type B, there is not enough information to distinguish between them

D.

Type B

E.

Type A

Answer and Explanation

The Correct Answer is E

A. Type AB: Type AB has both A and B antigens.
B. Type O: Type O has neither A nor B antigens.
C. Either Type A or Type B, there is not enough information to distinguish between them: Presence of A antigens and absence of B antigens identifies Type A (unless testing error or weak expression, but standardly it’s Type A).
D. Type B: Type B would have B antigens (and no A).
E. Type A: A antigens present and B antigens absent - Type A.


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Related Questions

Correct Answer is A

Explanation

True: O₂ binds to the heme (iron) portion of hemoglobin, whereas CO₂ binds primarily to amino groups on the globin (forming carbaminohemoglobin) and much CO₂ is also converted to bicarbonate inside RBCs, so they bind/are carried at different sites/forms.

Correct Answer is {"dropdown-group-1":"E"}

Explanation

A. No: no A/B antigens describes type O blood, not AB.
B. Anti-A and anti-B: those are antibodies found in the plasma of type O individuals; they are not RBC antigens and are not present in type AB plasma.
C. Anti-A: anti-A are plasma antibodies found in type B blood; the question asks about RBC antigens, not antibodies.
D. Anti-B: anti-B are plasma antibodies found in type A blood; again, not RBC antigens.
E. A and B: type AB individuals have both A and B antigens on their RBC surfaces (and typically have no anti-A or anti-B antibodies in their plasma).

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