AP BIOLOGY

Detailed explanation-1: -A protein molecule is made from a long chain of these amino acids, each linked to its neighbor through a covalent peptide bond (Figure 3-1). Proteins are therefore also known as polypeptides. Each type of protein has a unique sequence of amino acids, exactly the same from one molecule to the next.

Detailed explanation-2: -Amino acids are the monomers that make up proteins. Specifically, a protein is made up of one or more linear chains of amino acids, each of which is called a polypeptide.

Detailed explanation-3: -Protein molecules are long chains of amino acids that are folded into a three-dimensional shape. Chemically, an amino acid is a molecule that has a carboxylic acid group and an amine group that are each attached to a carbon atom called the carbon.

Detailed explanation-4: -A polypeptide is an unbranched chain of amino acids that are linked together by peptide bonds. The peptide bond links the carboxyl group of one amino acid to the amine group of the next amino acid to form an amide.

Detailed explanation-5: -A protein contains one or more polypeptides. Therefore, proteins are long chains of amino acids held together by peptide bonds. Figure 19.1. 3: Formation of a Peptide Bond. A peptide bond forms when the amino group of one amino acid bonds to the carboxyl group of another amino acid.