Bio 6A/C - DNA Components and Changes/Mutations (Part 2 - Ch. 9 HOLT Biology)
Multiple Choice
Identify the
letter of the choice that best completes the statement or answers the question.
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1.
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Griffith’s experiments showed that a. | dead bacteria
could be brought back to life. | b. | harmful bacteria were hardier than harmless
bacteria. | c. | heat caused the harmful and harmless varieties of bacteria to
fuse. | d. | genetic material could be transferred between dead bacteria and
living bacteria. | | |
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2.
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Using
radioactive tracers to determine the interactions of bacteriophages and their host bacteria, Hershey
and Chase demonstrated without question that a. | genes are composed of protein
molecules. | b. | DNA and proteins are actually the same molecules located in
different parts of cells. | c. | bacteria inject their DNA into the cytoplasm of
bacteriophages. | d. | DNA is the molecule that stores genetic information in
cells. | | |
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3.
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All
of the following are true of the viruses Hershey and Chase used in their study
except a. | they consisted
of DNA surrounded by a protein coat. | b. | they injected their DNA into cells. | c. | they destroyed
the DNA of the infected bacteria. | d. | they caused infected bacteria to make many new
viruses. | | |
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4.
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The
scientist who worked with Martha Chase to prove that genetic material is composed of DNA
was a. | Alfred
Hershey. | c. | Francis
Crick. | b. | Oswald Avery. | d. | Rosalind Franklin. | | | | |
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5.
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All
of the following are true about the structure of DNA except a. | short strands of
DNA are contained in chromosomes inside the nucleus of a cell. | b. | every DNA
nucleotide contains a sugar, a phosphate group, and a nitrogen base. | c. | DNA consists of
two strands of nucleotides joined by hydrogen bonds. | d. | the long strands
of nucleotides are twisted into a double helix. | | |
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6.
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A
nucleotide consists of a. | a sugar, a protein, and adenine. | b. | a sugar, an
amino acid, and starch. | c. | a sugar, a phosphate group, and a nitrogen
base. | d. | a starch, a phosphate group, and a nitrogen
base. | | |
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7.
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Purines and pyrimidines are a. | nitrogen bases found in amino acids. | b. | able to replace
phosphate groups from defective DNA. | c. | names of specific types of DNA
molecules. | d. | classification groups for nitrogen
bases. | | |
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8.
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Of
the four nitrogen bases in DNA, which two are purines and which two are pyrimidines? a. | adenine—thymine; uracil—cytosine | b. | adenine—thymine; guanine—cytosine | c. | adenine—guanine; thymine—cytosine | d. | uracil—thymine; guanine—cytosine | | |
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9.
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Watson and Crick built models that demonstrated that a. | DNA and RNA have
the same structure. | b. | DNA is made of two strands that twist into a double
helix. | c. | guanine forms hydrogen bonds with
adenine. | d. | thymine forms hydrogen bonds with
cytosine. | | |
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10.
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The
scientists credited with establishing the structure of DNA are a. | Avery and
Chargaff. | c. | Mendel and
Griffith. | b. | Hershey and Chase. | d. | Watson and Crick. | | | | |
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11.
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Watson and Crick : DNA a. | Avery : nucleotides | c. | Wilkins and Franklin : DNA | b. | Hershey and
Chase : protein | d. | Chargaff : X
rays | | | | |
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12.
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The
amount of guanine in an organism always equals the amount of a. | protein. | c. | adenine. | b. | thymine. | d. | cytosine. | | | | |
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13.
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adenine : thymine a. | protein : DNA | c. | guanine : cytosine | b. | Watson :
Crick | d. | adenine :
DNA | | | | |
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14.
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The
attachment of nucleotides to form a complementary strand of DNA a. | is accomplished
by DNA polymerase. | b. | is accomplished only in the presence of
tRNA. | c. | prevents separation of complementary strands of
RNA. | d. | is the
responsibility of the complementary DNA mutagens. | | |
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15.
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The
enzymes responsible for adding nucleotides to the exposed DNA template bases are a. | replicases. | c. | helicases. | b. | DNA polymerases. | d. | None of the above | | | | |
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