Question
Asked Sep 13, 2019
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Which of the following is correct regarding individuals who are blood type AB?
A) Their red blood cells only have the H antigen.
B) They carry anti-A antibodies.
C) They carry anti-B antibodies.
D) They are the universal donors.
E) They are the universal recipients.
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Expert Answer

Step 1

A blood type is the classification of blood, based on the presence and absence of antibodies and inherited antigenic substances on the surface of the red blood cells.

Step 2

In blood group AB, both A and B antigens are present on the surface of RBCs, but the plasma does not contain any antibodies against either antigen A or B. Therefore, an individual with AB blood type can receive blood from any group, but cannot donate blood to any other group except AB. Thus, they are known as universal recipients. So, option (E) They are the universal recipients, is correct.

Step 3

H antigen can be referred to as one of the various types of antigens, that have diverse biological functions. It is a precursor to each of the ABO blood group antigens and is apparently present in all people except those who have Bombay Blood phenotype. Therefore, it is not specific to the AB blood type. Moreover, AB blood type has both antigen A and B. So, option (A) Their red blood cells only have the H antigen, is incorrect.

AB blood type does not have any anti-A antibodies. In fact, AB blood type lacks any kind of antibodies in its plasma. So, option (B) They carry a...

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Animal Physiology and Biochemistry

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