Concept explainers
To label: Each part of the antibody molecule in the given diagram.
Introduction: An antibody is also called immunoglobulin. The plasma cells of the immune system produce antibodies to use them against pathogens invading the host body.
Answer to Problem 1CRQ
Pictorial representation: Fig.1 represents an antibody molecule structure indicating the antigen-binding site.
Fig 1: Antigen binding site.
Explanation of Solution
The antibody is made up of two parallel pairs of polypeptide chains linked into a Y shape. The arms of the Y shaped antibody molecule contains the antigen-binding site. This site interacts with antigens in a specific manner.
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