Biology II Ch. 14 Mastery Learning Test in Worksheets
Multiple Choice
Identify the
choice that best completes the statement or answers the question.
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1.
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Griffith concluded that
a. | bacteria do not have genetic material | b. | the genetic material controls the
phenotype | c. | the genetic material can pass from dead bacteria to live bacteria | d. | both B and C are
correct |
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2.
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Which of these would be true of the transforming substance that Avery
isolated?
a. | After isolation, it no longer could transform R strain bactreria into S strain
bacteria. | b. | Its effect could be destroyed if subjected to ribonuclease, which degrades
RNA. | c. | Its effect could be destroyed if subjected to digestion by trypsin, an enzyme that
digests protein. | d. | Its effect could be destroyed if exposed to DNAse. |
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3.
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Hershey and Chase found that
a. | the entire virus enters bacteria, so determining whether the protein coat or the DNA
controls replication of viruses is difficult. | b. | just the protein coat enters bacteria and
controls replication of viruses. | c. | just the DNA enters bacteria and controls
replication of viruses. | d. | the protein coat must be digested for DNA to
control replication of viruses. |
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4.
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In a DNA molecule, the sugar
a. | bonds covalently to phosphate groups | b. | bonds covalently to nitrogen-containing
bases | c. | is deoxyribose | d. | all of these are
correct |
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5.
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Which of these is NOT true of complementary base pairing?
a. | A is always bonded to T | b. | A pyramidine is always bonded to a
purine | c. | The amount of A + T is always equal to the amount of G + C | d. | All of these are
true |
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6.
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If the structure of DNA is compared to a ladder, then the
a. | sides of the ladder consist of phosphate and sugar. | b. | rungs of the ladder
are hydrogen-bonded bases | c. | ladder is twisted. | d. | all of these are
correct. |
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7.
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During DNA replication,
a. | the nucleotides separate and reassemble, allowing genetic
variability | b. | the daughter molecules are just like the parental molecule so that constancy is
maintained. | c. | one daughter molecule resembles the parental molecule, and one does not, so that
variability and constancy are achieved at the same time. | d. | all of these are
correct. |
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8.
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Semiconservative replication means that
a. | sometimes DNA can replicate and sometimes it cannot - this accounts for
aging. | b. | sometimes daughter DNA molecules are exact copies of parental molecules and sometimes
thay are not, so that genetic variability may occur. | c. | a new DNA molecule consists of an old strand
and a new strand. | d. | all of these are
correct. |
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9.
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X-ray diffraction data suggested that, in the ladder structure of DNA,
a. | the sides are composed of bases, and the rungs are composed of phosphate and sugar
molecules. | b. | nucleotides have a different composition than previously thought. | c. | DNA has a center
from which the ladders project. | d. | the ladder is
twisted. |
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10.
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Which is (are) correct regarding DNA?
a. | C is paired with G. | b. | The sugar is deoxyribose. | c. | Hydrogen bonds exist
between the bases. | d. | All of these are
correct. |
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11.
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Before replication begins,
a. | enzymes must be present. | c. | “free” nucleotides must
be present. | b. | the parental strands must unzip. | d. | All of these are
correct. |
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12.
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It is NOT required that the genetic material
a. | be replicated. | c. | store information. | b. | handle energy. | d. | undergo
mutation. |
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13.
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Griffith found that heat-killed S strains are
a. | mobile | c. | not virulent | b. | not mobile | d. | virulent |
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14.
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Hershey and Chase used
a. | C to label nucleic acids | c. | N to label
protein | b. | C to label protein | d. | S to label protein |
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15.
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By Chargaff’s rule,
a. | G = A | c. | C = T | b. | A = T | d. | G = T |
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16.
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In the DNA double helix, if 20% of the bases are A, then _______ of the bases
are G.
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17.
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Franklin offered information about the DNA molecule’s
a. | base content | c. | shape | b. | length | d. | sugar content |
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18.
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Replication of DNA cannot begin until the helix
a. | joins | c. | transposes | b. | transcribes | d. | unwinds |
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19.
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Each is true of replication in prokaryotes EXCEPT that it
a. | does not produce replication forks | c. | proceeds from a single loop of
DNA | b. | is unidirectional | d. | is relatively rapid |
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20.
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Each is true of replication in eukaryotes EXCEPT that it
a. | begins at numerous origins of replication | b. | begins at
replication forks | c. | is faster than that of
prokaryotes | d. | precedes cell division in eukaryotes |
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Short Answer
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21.
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What characteristics of proteins do you think might impede their use as the
genetic material? Base your answer on the three functions of the genetic material listed on page 222
of the text.
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22.
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Why are mutations necessary to the process of evolution?
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