An antibody molecule has total number of how many polypeptide chains:
Correct answer: D. 4
- A. 1
- B. 2
- C. 3
- D. 4
Explanation
Antibody (or immunoglobulin) molecules are glycoproteins composed of one or more units; each containing four polypeptide chains; two identical heavy(H) and two identical light chains(L) which are connected with each other by disulfide bridge and form a 'Y' shaped structure.
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