Matching (Value 8)
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Match each item with the correct statement below. a. | peptide | e. | disaccharide | b. | monosaccharide | f. | polysaccharide | c. | protein | g. | amino acid | d. | nucleotides | h. | nucleic acid |
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1.
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a simple carbohydrate molecule
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2.
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polymers produced by the linkage of monosaccharide monomers
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3.
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a sugar that forms from two monosaccharides
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4.
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any compound that contains an amino group and a carboxyl group in the same
molecule
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5.
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a peptide with more than 100 amino acids
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6.
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any combination of amino acids in which the amino group of one acid is united
with the carboxyl group of another through an amide bond
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7.
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nitrogen-containing polymers found primarily in cell nuclei
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8.
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monomers that make up DNA and RNA
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Multiple Choice (Value 15)
Identify the choice that best completes the statement or answers
the question.
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9.
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What functional group is present in all carbohydrates?
a. | amino | c. | carboxyl | b. | halogen | d. | carbonyl |
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10.
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Which form of polysaccharide is found in animals?
a. | starch | c. | sucrose | b. | glycogen | d. | glucose |
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11.
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A peptide bond is a bond between which functional groups?
a. | amino and alcohol | c. | carboxyl and alcohol | b. | amino and carboxyl | d. | carbonyl and
carbonyl |
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12.
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What is the role of an enzyme?
a. | speeds up biochemical reactions | b. | causes biochemical
reactions | c. | is a product in biochemical reactions | d. | provides extra heat for biochemical
reactions |
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13.
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In which of the following substances can a lipid NOT dissolve?
a. | water | c. | ketone | b. | alcohol | d. | carboxylic acid |
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14.
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Saponification is what type of reaction?
a. | hydrolysis | c. | hydrogenation | b. | dehydrogenation | d. | acid-base |
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15.
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An ester of a long-chain fatty acid and a long-chain alcohol is a(n)
____.
a. | fat | c. | triglyceride | b. | oil | d. | wax |
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16.
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Which of the following statements is true about the function of DNA in the
body?
a. | DNA transfers cell products. | b. | DNA confers structure on the
cell. | c. | DNA makes enzymes work more efficiently. | d. | DNA stores the
information needed to make protein. |
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17.
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A typical nucleotide is composed of ____.
a. | base + sugar | c. | base + phosphate | b. | sugar + phosphate | d. | base + phosphate +
sugar |
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18.
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A nucleotide contains which of the following functional groups?
a. | phosphate | c. | sulfur | b. | halogen | d. | carboxyl |
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19.
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Base-pairing in DNA involves ____.
a. | covalent bonds | c. | hydrogen bonds | b. | ionic bonds | d. | acid-base
reaction |
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20.
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How many termination code words are there?
a. | three | c. | twenty | b. | four | d. | thousands |
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21.
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The technique of identifying a person from a sample of hair, skin cells, or body
fluid is called ____.
a. | recombinant DNA technology | c. | DNA
fingerprinting | b. | genetic coding | d. | genetic sequencing |
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22.
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Which of the following molecules is responsible for transmitting the energy
needed by cells?
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23.
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Which of the following terms represents the entire set of chemical reactions
carried out by an organism?
a. | anabolism | c. | metabolism | b. | catabolism | d. | omnibolism |
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Short Answer: Complete one of the two questions (Value 2)
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24.
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Code words for the DNA bases consist of the letters A, T, ____, and ____
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25.
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How much of Earth’s atmosphere consists of nitrogen gas?
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