Biochemistry 3 - Amino Acids & Proteins

17 Questions

Settings
Please wait...
Biochemistry 3 - Amino Acids & Proteins

A quiz for the SBI4U Biology Course Biochemistry Unit


Questions and Answers
  • 1. 
    The type of bond that forms between amino acids in order to eventually form a protein is called a....
    • A. 

      Glycosidic linkage

    • B. 

      Hydrogen bond

    • C. 

      Ionic bond

    • D. 

      Peptide bond

    • E. 

      Hydrous bond

  • 2. 
    The formation of a protein or polypeptide relies on linking amino acids by way of....
    • A. 

      Dehydration synthesis

    • B. 

      Hydrolysis

    • C. 

      Hydration

    • D. 

      Polar covalent bonding

  • 3. 
    In the typical amino acid shown below, "R" represents:
    • A. 

      One atom of either Rubidium or Ruthenium

    • B. 

      Another amino group or carboxyl group, depending on the amino acid

    • C. 

      A variable group, different in each of the 20 amino acids

    • D. 

      R is none of the above.

  • 4. 
    When amino acids are bonded into a single long chain, the resulting product is considered to be a protein's....
    • A. 

      Primary Structure

    • B. 

      Secondary Structure

    • C. 

      Tertiary Structure

    • D. 

      Quaternary Structure

  • 5. 
    A chain of amino acids, which is then twisted into an Alpha Helix, or 'folded' into a Beta Pleat, is considered a protein's....
    • A. 

      Primary Structure

    • B. 

      Secondary Structure

    • C. 

      Tertiary Structure

    • D. 

      Quaternary Structure

  • 6. 
    A chain of amino acids, that has been twisted or folded, sometimes folds or twists upon itself even more, due to attractions between amino acids. This is an example of....
    • A. 

      Primary Structure

    • B. 

      Secondary Structure

    • C. 

      Tertiary Structure

    • D. 

      Quaternary Structure

  • 7. 
    If a protein consists of several different polypeptides, each with a complex three-dimensional shape, held together by chemical bonds, it is considered to have a fairly complex ____________ structure.
    • A. 

      Primary

    • B. 

      Secondary

    • C. 

      Tertiary

    • D. 

      Quaternary

  • 8. 
    Which of the following is NOT true about Proteins?
    • A. 

      They are insoluble in water due to their size & heavy molecular mass.

    • B. 

      They are the building block of many mammalian tissues, such as muscle or bone.

    • C. 

      They are stored as a nutrient, since they yield more energy than lipids or carbs.

    • D. 

      They are useful in cells as both structural components & in chemical reactions.

  • 9. 
    Any protein that can act as a catalyst for certain cellular chemical reactions is considered to be a(n)....
    • A. 

      Enzyme

    • B. 

      Antigen

    • C. 

      Antibody

    • D. 

      Transport protein

  • 10. 
    Proteins embedded in the cellular membrane are often used for many functions. Which of these is NOT a function of membrane proteins?
    • A. 

      Cell to cell adhesion

    • B. 

      Receptor site for hormone

    • C. 

      Transport of materials in/out of the cell

    • D. 

      Cell identity or recognition

    • E. 

      Cell nutrition

  • 11. 
    A protein produced by a white blood cell in response to some foreign element (bacterium, virus) is called a(n)....
    • A. 

      Enzyme

    • B. 

      Antigen

    • C. 

      Antibody

    • D. 

      Transport protein

  • 12. 
    Bacteria or viruses have proteins on their surface that our white blood cells recognize as foreign or 'non-self'. These proteins are called....
    • A. 

      Enzymes

    • B. 

      Antigens

    • C. 

      Antibodies

    • D. 

      Transport Proteins

  • 13. 
    The Sodium - Potassium pump is an excellent example of a(n)....
    • A. 

      Enzyme

    • B. 

      Antigen

    • C. 

      Antibody

    • D. 

      Transport Protein

  • 14. 
    The diagram below is showing a reaction between three amino acids. When the reaction is complete, the resulting bond and molecule will be, respectively:
    • A. 

      Pepsin, enzyme

    • B. 

      Peptide, polypeptide

    • C. 

      Amide, protein

    • D. 

      Peptide, dipeptide

  • 15. 
    The functional group shown below is a(n):
    • A. 

      Carboxyl Group

    • B. 

      Hydroxyl Group

    • C. 

      Amino Group

    • D. 

      Carbonyl Group

    • E. 

      Sulfhydryl Group

  • 16. 
    The functional group shown below is a(n)...
    • A. 

      Carboxyl Group

    • B. 

      Hydroxyl Group

    • C. 

      Amino Group

    • D. 

      Carbonyl Group

    • E. 

      Sulfhydryl Group

  • 17. 
    Several amino acids have the functional group below. It is a(n)....
    • A. 

      Carboxyl Group

    • B. 

      Hydroxyl Group

    • C. 

      Amino Group

    • D. 

      Carbonyl Group

    • E. 

      Sulfhydryl Group