Proteins are polypeptides because of what?

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Multiple Choice

Proteins are polypeptides because of what?

Proteins are polypeptides because they are made by linking amino acids with covalent peptide bonds. A peptide bond forms when the carboxyl group of one amino acid reacts with the amino group of the next amino acid, releasing a molecule of water. This covalent linkage creates a linear chain of amino acids, called a polypeptide. When one or more polypeptides fold into a stable three-dimensional structure that carries out a biological function, that molecule is a protein. The other descriptions refer to carbohydrate polymers, nucleic acid structures, or a feature of folding, not to the reason proteins are polypeptides.

Proteins are polypeptides because they are made by linking amino acids with covalent peptide bonds. A peptide bond forms when the carboxyl group of one amino acid reacts with the amino group of the next amino acid, releasing a molecule of water. This covalent linkage creates a linear chain of amino acids, called a polypeptide. When one or more polypeptides fold into a stable three-dimensional structure that carries out a biological function, that molecule is a protein. The other descriptions refer to carbohydrate polymers, nucleic acid structures, or a feature of folding, not to the reason proteins are polypeptides.

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