Conjugated proteins differ from simple proteins in that they contain
- 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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