A conjugated molecule such as a glycoprotein consists of
Correct answer: B. a protein combined with a non-protein group
- A. two identical monomers joined together
- B. a protein combined with a non-protein group
- C. a lipid combined with another lipid
- D. a polysaccharide broken into monosaccharides
Explanation
Conjugated molecules are built from two different classes of biological molecule joined together, so a glycoprotein is protein plus carbohydrate and a lipoprotein is protein plus lipid. The cell surface is coated with such molecules, and they are what allow cells to recognise one another. Two identical monomers joined together would simply be a dimer of a single class.
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About Conjugated Molecules
Conjugated molecules contain a non-protein component attached to a protein portion, giving the molecule properties that a simple protein lacks. The content includes glycoproteins, lipoproteins, phosphoproteins, nucleoproteins, chromoproteins and metalloproteins, with attention to their prosthetic groups and roles in transport, protection, catalysis and cellular structure.
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