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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Avery’s experiments showed that transformation a. | is prevented by
protein-destroying enzymes. | b. | is prevented by DNA-destroying
enzymes. | c. | causes protein to become DNA. | d. | is caused by a
protein. | | |
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3.
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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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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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Molecules of DNA are composed of long chains of a. | amino
acids. | c. | monosaccharides. | b. | fatty acids. | d. | nucleotides. | | | | |
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6.
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Which
of the following is not part of a molecule of DNA? a. | deoxyribose | c. | phosphate | b. | nitrogen base | d. | ribose | | | | |
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7.
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The
part of the molecule for which deoxyribonucleic acid is named is the a. | phosphate
group. | c. | nitrogen
base. | b. | sugar. | d. | None of the above | | | | |
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8.
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The
entire molecule shown in the diagram above is called a(n) a. | amino
acid. | c. | polysaccharide. | b. | nucleotide. | d. | pyrimidine. | | | | |
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9.
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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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10.
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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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11.
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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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12.
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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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13.
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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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14.
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During DNA replication, a complementary strand of DNA is made for each original DNA
strand. Thus, if a portion of the original strand is CCTAGCT, then the new strand will
be a. | TTGCATG. | c. | CCTAGCT. | b. | AAGTATC. | d. | GGATCGA. | | | | |
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15.
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The
enzymes that unwind DNA are called a. | double helixes. | c. | forks. | b. | DNA
helicases. | d. | phages. | | | | |
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