Antibodies play important role against microorganisms and other pathogens to which type of proteins do they belong________?
Correct answer: A. Globular proteins
- A. Globular proteins
- B. Fibrous Proteins
- C. Both a and b
- D. None of these
Explanation
Antibodies are immunoglobulins that recognize antigens and help neutralize or remove pathogens. Their polypeptide chains fold into compact, soluble three-dimensional shapes, so they are classified as globular proteins rather than fibrous structural proteins. Students may choose b because antibodies contain disulphide bonds and have an elongated Y shape, but shape alone does not make them fibrous proteins.
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About Proteins
Proteins are polymers of amino acids joined by peptide bonds, and their function depends on primary, secondary, tertiary and quaternary structure. The topic covers fibrous and globular proteins, enzymes, antibodies, hormones and transport proteins, as well as denaturation by heat or extreme pH.
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