Download Chapter 18-20 review

TEST 4 review
• _____ 1. A prophage is a(n)
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a. emerging virus.
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b. type of retrovirus.
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c. prion that has been integrated into a
bacterial cell's chromosome.
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d. viral genome that has been incorporated
into a bacterial cell's chromosome.
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e. none of the above
2. Which of the following is NOT LIKELY a way
that a bacterial population can acquire
increased genetic variation?
a. transduction
b. conjugation
c. binary fission
d. transformation
e. all of the above do not increase genetic
variation
_____ 3. Sometimes a bacteriophage transfers
a gene from one bacterium to another.
This process is called
a. transduction.
b. conjugation.
c. cloning.
d. binary fission.
e. transformation.
_____4. The ability of an E. coli bacterium
to act as a donor ("male") during
conjugation is usually due to a piece of
DNA called
a. a probe.
b. a plasmid.
c. recombinant DNA.
d. an F factor.
e. a Ti plasmid.
_____ 5.. R plasmids can cause medical problems because they
a. control conjugation in bacteria.
b. are used as vectors to transfer genes to plants.
c. code for DNA polymerase.
d. protect bacteria against mutations.
e. make bacteria resistant to antibiotics
6. A nucleic acid probe can be used to
a. insert genes into a host cell.
b. make DNA for gene cloning.
c. splice pieces of DNA.
d. cut pieces of DNA down to manageable size.
e. find a particular nucleotide sequence within a mass of DNA.
_____
_____7. Archaeologists unearthed a human
skull with a small dried fragment of the
scalp still attached. They extracted a tiny
amount of DNA from the scalp tissue.
How could they obtain sufficient DNA for an
analysis of the ancient human's
genes?
a. subject the DNA to electrophoresis
b. use a nucleic acid probe
c. subject the specimen to amniocentesis
d. use the polymerase chain reaction
e. subject the DNA to restriction enzymes
_____8. Which of the following would be
MIGHT be considered a transgenic
organism?
a. a bacterium that has received genes via
conjugation
b. a human given a corrected human bloodclotting gene
c. a fern grown in cell culture from a single
fern root cell
d. Jake Wells
e. a human treated with insulin produced
by E. coli bacteria
_____9. The control of gene expression is more complex in multicellular eukaryotes
than in prokaryotes because
a. eukaryotic cells are much smaller.
b. in a multicellular eukaryote, different cells are specialized for different
functions.
c. prokaryotes are restricted to stable environments.
d. eukaryotic chromosomes have fewer nucleotides, so each nucleotide
sequence must do several jobs.
e. the genes of eukaryotes provide information for making proteins.
10.
• Tandem repeats of DNA sequences can be
markers for disease. What disease is caused
by CGG repeats of the 5 prime untanslated
region if an exon.
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• In HIV/AIDS T-4 helper cells that are infected
with the HIV virus are marked for destruction
by cytotxic T cells. Also a if the DNA of a
cancerous cell cannot be repaired the a gene
may activate cell “suicide genes” The
programmed cell death is called?
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• Another name for the temperate viral life
cycle?
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• What are "sticky ends". How are they formed?
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• Name five substances that are needed to carry
out a polymerase chain reaction?
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• Retro-viruses would use what enzyme to read
read and make single strand DNA molecules?
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• When gel-electrophoresis is performed,
restriction enzymes are employed to run a
digest. The result is a RFLP. What does RFLP
stand for?
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• The ____________ (6 letters) is the protein
coat or protein shell for a virus.
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• Gene that codes for a tumor suppressor
protein that is involved in the synthesis of
several growth inhibiting proteins.
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• Type of DNA that is used to find mRNA exons
21 What structures does the DNA
wrap around?
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