BANKING AFFAIRS

BANKING GENERAL KNOWLEDGE

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
The H antigen is present on the red cells of what blood type(s)?
A
All types A, B, AB and O
B
Only in type A, type B and type AB
C
Only in type O
D
Only in type AB
Explanation: 

Detailed explanation-1: -Depending upon a person’s ABO blood type, the H antigen is converted into either the A antigen, B antigen, or both. If a person has blood group O, the H antigen remains unmodified. Therefore, the H antigen is present in the highest amounts in blood type O and in the least amounts in blood type AB.

Detailed explanation-2: -The outermost portion of the bacteria’s surface covering, called the O antigen; and. A slender threadlike structure, called the H antigen, that is part of the flagella.

Detailed explanation-3: -Aside from the sugar (glycan or carbohydrate) antigens, the red blood cell membrane contains three types of protein that carry blood group antigens: single-pass proteins, multi-pass proteins, and glycosylphosphatidylinositol (GPI)-linked proteins.

Detailed explanation-4: -The ABO blood group system consists of two antigens-A and B-and four phenotypes-groups A, B, AB, and O. A and B are autosomal-codominant antigens (ISBT No. 001) and are expressed on group A, B, and AB red cells, respectively.

Detailed explanation-5: -Gene. The ABO locus encodes specific glycosyltransferases that synthesize A and B antigens on RBCs. For A/B antigen synthesis to occur, a precursor called the H antigen must be present. In RBCs, the enzyme that synthesizes the H antigen is encoded by the H locus (FUT1).

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