Conjugated proteins differ from simple proteins in that they contain
Correct answer: B. a non protein prosthetic group in addition to the polypeptide
- A. only amino acids
- B. a non protein prosthetic group in addition to the polypeptide
- C. no peptide bonds
- D. two identical chains
Explanation
A conjugated protein is bound to a non protein group, so haemoglobin carries a haem group, glycoproteins carry carbohydrate and lipoproteins carry lipid, and in each case the prosthetic group is essential to the function. Simple proteins yield only amino acids on hydrolysis. Removing the prosthetic group leaves the protein inactive.
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About Classification of Proteins
Proteins are classified by composition as simple, conjugated and derived proteins, and by shape as fibrous or globular proteins. The topic relates these classes to examples such as albumin, keratin, collagen, haemoglobin and casein, while distinguishing structural proteins from proteins with transport, catalytic or regulatory roles.
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