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5 Written questions

5 Matching questions

  1. The weak electrical attractions within polypeptide chains account for the protein's
    a. primary structure
    b. secondary structure
    c. tertiary structure
    d. quaternary structure
  2. In comparison to the well-defined structure of starch, which of the following is the most important factor that allows for the synthesis of thousands of different proteins?
    a. number of cell ribosomes
    b. number of different amino acids
    c. availability of amino acids containing sulfur
    d. availability of amino acids containing hydroxyl groups
  3. what is the process by which heat or acidity disrupts the noral shape of the protein chain?
    a. digestion
    b. condensation
    c. denaturation
    d. hydrogenation
  4. Any of the following can be used by the body for the synthesis of nonessential amino acid except:
    a. a fragment of fat
    b. an essential mineral
    c. an essential amino acid
    d. a fragment of carbohydrate
  5. After a hamburger is eaten, in what organ is the hydrolysis of its proteins initiated?
    a. mouth
    b. stomach
    c. small intestines
    d. large intestines
  1. a b. secondary structure
  2. b b. number of different amino acids
  3. c c. denaturation
  4. d b. an essential mineral
  5. e b. stomach

5 Multiple choice questions

  1. c. It is constructed of 4 polypeptide chains
  2. d. Condensation
  3. a. The side group
  4. c. Nitrogen
  5. b. tripeptide

5 True/False questions

  1. What is the name of the inactive form of the protein- splitting enzyme in the stomach?
    a. peptidase
    b. propepsin
    c. pepsinogen
    d. propeptidase
    c. order of the amino acids in the peptide chain


  2. What amino acid is classified as conditionally essential when dietary intake of phenylalanine is insufficient or the body cannot normally metabolize phenylalanine?
    a. cysteine
    b. tyrosine
    c. glutamine
    d. isoleucine
    b. tyrosine


  3. What element is found in proteins but not in carbohydrates and fats?
    a. Carbon
    b. Oxygen
    c. Calcium
    d. Nitrogen
    d. Nitrogen


  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. 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. partially essential


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