Which term refers to the building blocks of proteins, existing in 20 naturally occurring forms that confer different properties to proteins?

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Multiple Choice

Which term refers to the building blocks of proteins, existing in 20 naturally occurring forms that confer different properties to proteins?

Explanation:
Proteins are built from amino acids, the twenty naturally occurring forms that give proteins their diversity. Each amino acid has a common backbone and a variable side chain (R group). The properties of these side chains—whether they are hydrophobic, polar, or charged—shape how the protein folds and how it interacts with other molecules, ultimately determining function. Amino acids link together via peptide bonds to form polypeptides that fold into specific three-dimensional structures. In contrast, nucleotides are the units of nucleic acids, carbohydrates are built from monosaccharides, and lipids do not share the same repeating monomer structure as proteins. So the term is amino acid.

Proteins are built from amino acids, the twenty naturally occurring forms that give proteins their diversity. Each amino acid has a common backbone and a variable side chain (R group). The properties of these side chains—whether they are hydrophobic, polar, or charged—shape how the protein folds and how it interacts with other molecules, ultimately determining function. Amino acids link together via peptide bonds to form polypeptides that fold into specific three-dimensional structures. In contrast, nucleotides are the units of nucleic acids, carbohydrates are built from monosaccharides, and lipids do not share the same repeating monomer structure as proteins. So the term is amino acid.

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