Exam 19: Amino Acids and Proteins

Give the correct name and three and one letter abbreviation for the amino acid shown.

When two protein chains combine to form an active protein, the structural level is ________.

Denaturation of a protein

Which of the following combinations of food would supply all the essential amino acids?

Collagen, a protein found in tendons and cartilage, would be classified as a ________ protein.

The ionized form of nearly all amino acids at physiological pH has a net charge of ________.

What type of interaction occurs between the R groups of two serines?

A chain made of more than 50 amino acids is usually referred to as a(n)

Disulfide bonds in a protein chain connect

Sucrase, the protein that facilitates the hydrolysis of sucrose, would be classified as a(n)________ protein.

What process occurs when heat, acids, bases, and heavy metal ions cause a loss of biological function of a protein?

A basic amino acid has an R group that contains

The structural formulas of amino acids are the same EXCEPT for the

Which of the following is NOT a function of proteins?

Circle the peptide bond in this structure.

What type of interaction would you expect between the following R groups in the tertiary structure of a protein?

In the peptide Ser-Cys-Ala-Gly, the C-terminal end is

In an enzyme, the polypeptide chain folds into a compact shape known as the ________ structure.

In a typical amino acid at physiological pH, the carboxylate is

Hydrophobic interactions help to stabilize the ________ structure(s)of a protein.