Questions: If the plasma of a blood sample contains the anti-B and not the anti-A antibodies, the ABO blood type is B A 0 AB

Transcript text: If the plasma of a blood sample contains the anti-B and not the anti-A antibodies, the ABO blood type is $\qquad$ B A 0 $A B$

Solution

The answer is the second one (A): A.

Explanation for each option:

B: This option is incorrect because if the plasma contains anti-B antibodies, it means the blood type cannot be B. Blood type B would have B antigens on the red blood cells and would not produce anti-B antibodies.
A: This option is correct. Blood type A has A antigens on the red blood cells and produces anti-B antibodies in the plasma.
0: This option is incorrect. Blood type O has neither A nor B antigens on the red blood cells and produces both anti-A and anti-B antibodies in the plasma.
AB: This option is incorrect. Blood type AB has both A and B antigens on the red blood cells and does not produce anti-A or anti-B antibodies in the plasma.

Summary: The plasma of a blood sample containing anti-B and not anti-A antibodies indicates that the ABO blood type is A.

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