NAME: ________________________

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5 Written Questions

5 Matching Questions

  1. The application of heat or acid to a protein that causes its shape to change is known as
    a. stiffening
    b. condensation
    c. denaturation
    d. destabilization
  2. In what organ is pepsin active
  3. Protein-hydrolyzing ensymes are commonly known as
    a. proteases
    b. hydrolyzers
    c. prodigestins
    d. denaturases
  4. What digestive enzyme would be most affected in people who are unable to produce hydrochloric acid?
    a. pepsin
    b. transaminase
    c. pancreatic protease
    d. intestinal peptidase
  5. The weak electrical attractions within polypeptide chains account for the protein's
    a. primary structure
    b. secondary structure
    c. tertiary structure
    d. quaternary structure
  1. a c. denaturation
  2. b ...
  3. c b. secondary structure
  4. d stomach
  5. e a. pepsin

5 Multiple Choice Questions

  1. c. Nitrogen
  2. c. hemoglobin
  3. b. glycine
  4. b. Three amino acids bonded together
  5. b. It must be supplied by the diet

5 True/False Questions

  1. Which of the following would be classified as a polypeptide?
    a. 1 amino acid
    b. 3 amino acids bonded together
    c. 9 fatty acids bonded together
    d. 20 amino acids bonded together
    c. an aldehyde group

          

  2. Which of the following is not an essential amino acid in human nutrition?
    a. Proline
    b. Threonine
    c. Methionine
    d. Tryptophan
    b. It must be supplied by the diet

          

  3. Terms used to classify amino acids in the diet include all of the following except
    a. essential
    b. nonessential
    c. partially essential
    d. conditionally essential
    c. 20

          

  4. What is meant by the amino acid sequence of a protein?
    a. number of side chains in the protein
    b. folding arrangement of the peptide chain
    c. order of amino acids in the peptide chain
    d. order of only the essential amino acids in the protein
    c. pepsinogen

          

  5. When two amino acids are chemically joined together, the resulting structure is called a
    a. dipeptide
    b. diglyceride
    c. polypeptide
    d. disaccharide
    b. tripeptide

          

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