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 transformation experiments a. | changed proteins
into DNA. | b. | caused harmless bacteria to become
deadly. | c. | resulted in DNA molecules becoming
proteins. | d. | were designed to show the effect of heat on
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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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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Molecules of DNA are composed of long chains of a. | amino
acids. | c. | monosaccharides. | b. | fatty acids. | d. | nucleotides. | | | | |
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7.
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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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8.
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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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9.
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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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10.
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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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11.
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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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12.
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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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13.
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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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14.
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adenine : thymine a. | protein : DNA | c. | guanine : cytosine | b. | Watson :
Crick | d. | adenine :
DNA | | | | |
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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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