Why is an antibody represented as H₂L₂?

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Each antibody molecule has two antigen-binding sites

Two interchain disulphide bonds bind the two halves of an antibody

Each light chain and each heavy chain has two intrachain disulphide bonds

Each antibody molecule has two light chains and two heavy chains of polypeptides

answer is B.

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Detailed Solution

An antibody is represented as H₂L₂ because each antibody molecule has two light chains and two heavy chains of polypeptides. Each antibody molecule has two antigen-binding sites but it not the reason why it is termed H₂L₂. Each light chain has two intrachain disulphide bonds. Each heavy chain has four intrachain disulphide bonds. The two heavy chains are linked by two interchain disulphide bonds.

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