Chem Test 3

  1. The compound CH3CH3NHCH3 is classified as a

    C) secondary amine
  2. The compound CH3CH2NH2 is classified as a

    C) primary amine
  3. Which of the following compounds CANNOT form hydrogen bonds with water?

    E) All of the compounds above are capable of forming hydrogen bonds with water
  4. Name the following compound: CH3-NH-CH3

    a) ethyl amine
    b) dimethyl ether
    c) methanal
    d) 1-methanoate
    e) dimethyl amine
    e) dimethyl amine
  5. In response to allergic reactions or injury to cells, the body increases the production of

    E) histamine.
  6. When acetic acid reacts with ammonia, NH3, the reaction called amidation yields

    E) acetamide
  7. In the formation of N-ethylacetamide, the reactant(s) is(are)

    A) acetic acid and ethylamine
  8. What relation does the boiling point of an amine have to a simliar hydrocarbon?

    B) higher
  9. Amines can form _____ bonds with other molecules.

    D) hydrogen
  10. In what form are amine-containing drugs often administered?

    A) amine salt
  11. Which of the following is NOT a function of proteins?

    E) stores the genetic information of a living organism
  12. Sucrase, the protein that facilitates the hydrolysis of sucrose, would be classified as _____ protein.

    D) catalytic
  13. The peptide bonds that combine amino acids in a protein are

    E) amide bonds
  14. The bonds that are important in the secondary structure of a protein are

    D) hydrogen bonds
  15. Which of the following shows all of the tripeptides that can be formed from one molecule each of glycine (Gly), Valine (Val), and leucine (Leu)?

    D) GlyValLeu, GlyLeuVal, ValLeuGly, ValGlyLeu, LeuGlyVal, LeuValGly
  16. Hemoglobin has a total of _______ protein chains in its quaternary structure.

    A) 4
  17. In a typical amino acid zwitterion, the carboxylate end is

    B) neutral
  18. What process occurs when heat, acids, bases, and heavy metal ions cause a los of biological function of a protein?

    B) denaturation
  19. In digestion, proteins are broken down into amino acids by a(n) ______ reaction.

    E) hydrolysis
  20. Which of the following is NOT true for a competitive inhibitor?

    D) It binds to the enzyme at a site remote from the active site.
  21. A noncompetitive inhibitor

    D) alters the three-dimensional structure of the enzyme
  22. In any reaction catalyzed by an enzyme, the reaction molecule is called the

    A) substrate
  23. When a substance bonds to an enzyme for reaction, its place of binding is the

    D) active site
  24. In the induced-fit model of enzyme action, the enzyme active site

    A) adjusts shape to adapt to the shape of the substrate
  25. The function of the enzyme-substrate complex is to provide an alternative reaction pathway that

    D) decreases the activation energy for the reaction
  26. Consider an enzymatic reaction in which the initial concentration of substrate is low. If the amount of enzyme is held constant, but the amount of substrate is increased, the rate of an enzyme catalyzed reaction will

    E) increase at first in a linear fashion, then remain at a constant high rate
  27. An irreversible inhibitor is one that

    D) binds covalently to the enzyme active site
  28. Penicilin functions as an antibiotic by

    D) inhibiting the enzymes for cell wall formation in bacteria
  29. A compound that binds to the surface of an enzyme, and changes its shape so that a substrate cannot enter the active site, is called a(n)

    D) noncompetitive inhibitor
  30. When an end product from an enzyme-mediated sequence is also an inhibitor for an earlier step in the reaction sequence, the process is referred to as

    A) feedback control
  31. Allosteric enzymes can control their output of product by

    E) binding a postive or negative regulator at a noncompetitive site
  32. When a cofactor is a small organic molecule, it is known as a(n)

    B) coenzyme
  33. The B vitamins are examples of

    B) water-soluble vitamins
  34. A biological catalyst is called a(n) ______.

    A) enzyme
  35. Enzymes that catalyze the same reactions but have slightly different structures are called _____.

    C) isoenzymes
  36. A diet very low in vitamin C can lead over time to the condition _______.

    E) scurvy
Card Set
Chem Test 3
Final Exam Review