Campbell 5.4 Reading Quiz: Proteins!

20 Questions

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Reading Quizzes & Trivia

This reading quiz covers section 5. 4 in your Campbell textbook as well as some review questions on Macromolecules. If you need help on the Macromolecule questions please refer back to sections 5. 1-5. 3 in your textbook. The quiz will mostly highlight information about Proteins - especially their structures and functions as enzymes.


Questions and Answers
  • 1. 
    On the bottom of p.80 your text states that, "a protein is not just a polypeptide chain".  So what is a protein?  Answers will NOT be counted correct unless they are in your own words - look on p.80 for this specific spot for the best answer.
  • 2. 
    Explain what Fig. 5.19 is showing IN YOUR OWN WORDS.
  • 3. 
    What is the name of the process that joins monomers together to make polymers?
    • A. 

      Hydrolysis

    • B. 

      Monomerization

    • C. 

      Protein formation

    • D. 

      Coiling

    • E. 

      Dehydration synthesis

  • 4. 
    In hydrolysis, __________________ , and in this process water is _________________________ .
    • A. 

      A polymer breaks up to form monomers ... consumed

    • B. 

      A monomer breaks up to form polymers ... produced

    • C. 

      Monomers are assembled to produce a polymer ... consumed

    • D. 

      Monomers are assembled to produce a polymer ... produced

    • E. 

      A polymer breaks up to form monomers ... produced

  • 5. 
    In science knowing Latin and Greek roots is frequently helpful in understanding definitions.  One example is hydrolysis because hydro- refers to water and -lysis means __________________ which is literally what happens during the process of hydrolysis.
  • 6. 
    Figure 5.15 in your textbook shows 8 of the possible functions of proteins in living things.  In each of the 8 smaller pictures (except structural proteins), the proteins are shown in the color _________________________.
  • 7. 
    Check any of the following that are possible functions of proteins.  Consult Fig. 5.15 in your text for help.
    • A. 

      Transporting substances in/out of cells.

    • B. 

      As a support protein in hair, feathers, connective tissues, etc.

    • C. 

      As hormones that cause other tissues to respond.

    • D. 

      As amino acids that make polypeptides.

    • E. 

      As enzymes that speed up chemical reactions.

  • 8. 
    The major parts of an amino acid are a central Carbon atom, an amino group, a carboxyl group, a single Hydrogen atom, and an R group which is identical in all 20 amino acids.
    • A. 

      True

    • B. 

      False

  • 9. 
    According to Fig. 5.16 in your textbook, amino acids can be divided into 3 major categories based on their properties.  These categories are _______________, polar, and electrically charged.
  • 10. 
    Using Fig. 5.16 in your textbook you can see that molecules that are polar are also considered ______________________, or water loving.
  • 11. 
    Every time a peptide bond is created to link 2 amino acids together a ______________ molecule is released.  (See Fig. 5.17 for help)
  • 12. 
    In Fig. 5.17 in your textbook, how many amino acids are shown linked together in the molecule in the lower half of the diagram?
    • A. 

      1

    • B. 

      2

    • C. 

      3

    • D. 

      4

    • E. 

      5

    • F. 

      6

  • 13. 
    Every protein (polypeptide) has a free ________________ on one end and a free ___________________ on the other end.
    • A. 

      Carboxyl group......R group

    • B. 

      Amino group.....carboxyl group

    • C. 

      C-terminus........C-terminus

    • D. 

      A-terminus.......A-terminus

  • 14. 
    A polypeptide is the same as a protein.
    • A. 

      True

    • B. 

      False

  • 15. 
    What determines the 3-D structure that a protein will have?
    • A. 

      Globular protein associations with amino acids

    • B. 

      Fibrous protein associations with amino acids

    • C. 

      The amino acid sequence of the protein

    • D. 

      Whether the protein contains electrically charged amino acids

  • 16. 
    Fig. 5.18(a) shows the way that 1 polypeptide chain folds in 3-D space, but it also shows something else in yellow that helps the polypeptide keep its correct conformation.  These yellow lines are:
    • A. 

      Globular proteins

    • B. 

      Antibodies

    • C. 

      Coils

    • D. 

      Disulfide bridges

  • 17. 
    Which level of protein structure would describe a protein or polypeptide as having a-helices or b-pleated sheets?
    • A. 

      Primary

    • B. 

      Secondary

    • C. 

      Tertiary

    • D. 

      Quaternary

  • 18. 
    Which level of protein structure would tell you whether a protein is made of more than one polypeptide chain?
    • A. 

      Primary

    • B. 

      Secondary

    • C. 

      Tertiary

    • D. 

      Quaternary

  • 19. 
    Which level of protein structure takes into account the total 3-D shape of a protein/polypeptide including its hydrophobic interactions which organize all hydrophobic R-group amino acids into the shielded center of the protein/polypeptide.
    • A. 

      Primary

    • B. 

      Secondary

    • C. 

      Tertiary

    • D. 

      Quaternary

  • 20. 
    Which level of protein structure takes into account only the protein's simple sequence of amino acids?
    • A. 

      Primary

    • B. 

      Secondary

    • C. 

      Tertiary

    • D. 

      Quaternary