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Multiple Choice
Protein molecules are polymers (chains) of __________.
A
amino acids
B
monosaccharides
C
fatty acids
D
nucleotides
Verified step by step guidance
1
Understand the structure of proteins: Proteins are macromolecules made up of smaller building blocks called monomers. These monomers are linked together in a chain to form the polymer.
Recall the specific monomers that make up proteins: Proteins are composed of amino acids, which are organic molecules containing both an amino group (-NH₂) and a carboxyl group (-COOH).
Differentiate between the options provided: Monosaccharides are the building blocks of carbohydrates, fatty acids are components of lipids, and nucleotides are the monomers of nucleic acids. None of these are involved in forming protein chains.
Recognize the polymerization process: Amino acids are joined together by peptide bonds during protein synthesis, forming a polypeptide chain that folds into a functional protein.
Conclude that the correct answer is amino acids, as they are the monomers that make up protein molecules.