Multiple Choice
In biochemistry, what is the monomer (basic building block) of a protein?
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1. Introduction to Biochemistry
Proteins
Multiple Choice
In proteins, what is the monomeric unit that links together to form a polypeptide chain?
A
Fatty acid
B
Monosaccharide
C
Nucleotide
D
Amino acid
Verified step by step guidance1
Understand that proteins are polymers made up of repeating monomeric units linked together.
Recall that the monomeric units of proteins are amino acids, which contain an amino group, a carboxyl group, a hydrogen atom, and a distinctive side chain attached to a central carbon atom.
Recognize that amino acids link together through peptide bonds, which form between the carboxyl group of one amino acid and the amino group of another, creating a polypeptide chain.
Differentiate amino acids from other biological monomers such as fatty acids (building blocks of lipids), monosaccharides (building blocks of carbohydrates), and nucleotides (building blocks of nucleic acids).
Conclude that the correct monomeric unit that forms polypeptide chains in proteins is the amino acid.
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