Biology II Ch. 3 Test in Text
Multiple Choice
Identify the
choice that best completes the statement or answers the question.
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1.
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Which of these is not a characteristic of carbon?
a. | forms four covalent bonds | c. | is sometimes
ionic | b. | bonds with itself | d. | forms long chains |
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2.
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The functional group - COOH is
a. | acidic | c. | never ionized | b. | basic | d. | All of these are
correct |
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3.
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A hydrophilic group is
a. | attracted to water | c. | found in faty acids | b. | a polar or ionized group | d. | all of these are
correct |
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4.
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Which of these is an example of hydrolysis?
a. | amino acid + amino acid --> dipeptide + H2O | b. | dipeptide +
H2O --> amino acid + amino acid | c. | both of these are correct | d. | neither of these is
correct |
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5.
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Which of these makes cellulose nondigestible?
a. | a polymer of glucose subunits | b. | a fibrous protein | c. | the linkage between
the glucose molecules | d. | the peptide linkage between the amino acid
molecules |
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6.
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A fatty acid is unsaturated if it
a. | contains hydrogen | c. | contains an acidic group | b. | contains double
bonds | d. | bonds to
glygogen |
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7.
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Which of these is not a lipid?
a. | steroid | c. | polysaccharide | b. | fat | d. | wax |
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8.
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The difference between one amino acid and another is found in the
a. | amino group | c. | R group | b. | carboxyl group | d. | peptide bond |
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9.
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The shape of the polypetide is
a. | maintained by bonding between parts of the polypeptide | b. | important to its
function | c. | ultimately dependent upon the primary structure | d. | all of these are
correct |
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10.
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Nucleotides
a. | contain a sugar, a nitrogen-containing base, and a phosphate
molecule | b. | are the monomers for fats and polysaccharides | c. | join together by
covalent bonding between the bases | d. | all of these are
correct |
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11.
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THIS IS QUESTION #14 IN TEXT
ATP
a. | is an amino acid | b. | has a helical structure | c. | is a high-energy
molecule that can react with water to release ADP and phosphate | d. | provides enzymes for
metabolism |
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Matching
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Question #12 a. | hydrolysis | b. | polymer | c. | condensation reaction (dehydration
synthesis) | d. | monomers |
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12.
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Picture A
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13.
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Picture B
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14.
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Picture C
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15.
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Picture D
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Question #13 a. | secondary: alpha
helix | b. | quaternary: several polypeptides | c. | primary: sequence of amino
acids | d. | tertiary: polypeptide folds and twists |
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16.
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Picture A
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17.
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Picture B
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18.
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Picture C
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19.
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Picture D
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Completion
20-28 go with Understanding the Terms on page 56
Use the word Bank on page on that page.
You
do not have to spell the words in ( ).
Complete
each statement.
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20.
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Understanding the Terms
A.
Class of organic compounds consisting of carbon, hydrogen, and oxygen atoms; includes
monosaccharides, disaccharides, and polysaccharides
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21.
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B. Class of organic compounds that tend to be soluable in nonpolar
solvents such as alcohol; includes fats and oils.
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22.
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C. Macromolecule consisting of covalently bonded monomers.
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23.
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D. Molecules with the same molecular formula but different structure and,
therefore, shape.
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24.
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E. Organic catalyst, usually a protein molecule, that speeds chemical
reactions in living systems.
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25.
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F. Organic molecule having an amino group and an acid group, that
covalently bonds to produce protein molecules.
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26.
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G. Polymer having, as its primary structure, a sequence of amino acids
united through covalent bonding.
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27.
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H. Polymer of nucleotides - both DNA and RNA.
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28.
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I. Two or more amino acids joined together by covalent bonding.
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