In the given figure,the part labeled as 'a' r | vedclass

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(A) The provided figure shows the structure of an antibody molecule $(IgG)$.An antibody molecule consists of four polypeptide chains: two long chains

Vedclass · Accepted Answer

Antigen binding site

Vedclass · Answer

(A) The provided figure shows the structure of an antibody molecule $(IgG)$.An antibody molecule consists of four polypeptide chains: two long chains called '$Heavy$ chains' and two short chains called '$Light$ chains'.The part labeled '$a$' points to the variable region at the tips of the $Y$-shaped structure,which is the specific site where an antigen binds to the antibody.Therefore,'$a$' represents the antigen binding site.

In the given figure,the part labeled as '$a$' represents:

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Assertion $(A)$: Antigen can be easily recognized because it has antigenic determinants.
Reason $(R)$: The recognition ability is innate.

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