Biology: Life on Earth
Audesirk & Audesirk
Prentice-Hall, Inc.

Chapter 3: Self-Quiz

  1. What is the main function of polysaccharides in living cells?
    1. energy storage
    2. storage of hereditary information
    3. catalytic activity
    4. formation of membranes
    5. only b and c

  2. Foods that are high in fiber are most likely to be derived from
    1. plants
    2. dairy products
    3. meat
    4. fish
    5. all of the above

  3. Proteins differ from one another because
    1. The peptide bonds linking amino acids differ from protein to protein.
    2. The sequence of amino acids in the polypeptide chain differs from protein to protein.
    3. Each protein molecule contains its own unique sequence of sugar molecules.
    4. The number of nucleotides found in each protein varies from molecule to molecule.
    5. The number of nitrogen atoms in each amino acid differs from the number in all others.

  4. Which, if any, of the following choices does not properly pair an organic compound with one of its building blocks (subunits)?
    1. polysaccharide-monosaccharide
    2. fat-fatty acid
    3. nucleic acid-glycerol
    4. protein-amino acid
    5. All are paired correctly.

  5. Which one of the following statements is not true with regard to glycogen, starch, and cellulose? All are
    1. complex carbohydrates
    2. composed solely of glucose monomers
    3. easily digested by animals
    4. polysaccharides
    5. found in plants, except glycogen, which is found in animals

  6. Molecules of starch and cellulose are structurally different in that,
    1. Cellulose is formed from disaccharide subunits.
    2. Cellulose subunits possess five carbons.
    3. The glucose subunits are bonded differently in cellulose.
    4. Cellulose is a disaccharide.
    5. Starch is a carbohydrate and cellulose is a protein.

  7. For example, chitin is a ________.
    1. polymer
    2. polysaccharide
    3. carbohydrate
    4. a and b
    5. all of these

  8. In which of the following items is the organic polymer correctly paired with its respective monomer?
    1. protein and amino acids
    2. carbohydrates and polysaccharides
    3. hydrocarbon and monosaccharides
    4. lipid and steroids
    5. DNA and ATP

  9. Long-term plant energy is stored in which of the following forms?
    1. glucose
    2. glycogen
    3. starch
    4. cellulose
    5. ATP

  10. Cholesterol, testosterone, estrogen, and ecdysone are all examples of
    1. fatty acids
    2. proteins
    3. steroids
    4. hormones
    5. waxes

  11. Which is the most functionally diverse group of biological molecules?
    1. carbohydrates
    2. lipids
    3. proteins
    4. nucleic acids
    5. organelles

  12. Getting a "perm" involves chemically breaking and reforming ________; in other words, altering ___________ structure.
    1. disulfide bridges; secondary
    2. disulfide bridges; tertiary
    3. H bonds; secondary
    4. H bonds; tertiary
    5. peptide bonds; primary


Designed in cooperation with Andrew Stull and Steven Brunasso.

Last Update - July 25, 1997

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