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Nucleic acid molecules used to deliver new genes to cells are called __________.

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Which of the following microbes has been genetically engineered to contain a protein that helps protect crops from freezing?


A) Deinococcus radiodurans
B) Bacillus thuringiensis
C) Pseudomonas
D) Salmonella
E) Escherichia coli

F) A) and D)
G) A) and E)

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Vectors usually contain genetic __________ such as antibiotic genes or fluorescent tags.

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Beta-carotene, the biochemical precursor to vitamin A, can be added to rice by using __________ DNA technology, thereby increasing its nutritional value.

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A northern blot differs from a Southern blot in


A) the type of probe used.
B) the presence or absence of a nitrocellulose membrane.
C) the size of the genetic sequences involved.
D) the number of genetic sequences detected.
E) the type of nucleic acid being isolated.

F) A) and B)
G) C) and D)

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Southern blotting is a technique that can be used to identify microbes that cannot be cultured.

A) True
B) False

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__________ are used in the detection of DNA by FISH.


A) Restriction fragments
B) Reverse transcriptase and DNA polymerase
C) Synthetic DNAs and fluorescent tags
D) Compressed air and gold beads
E) DNA polymerase and DNA ligase

F) A) and D)
G) A) and C)

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Which of the following procedures might be used to detect the presence of genetic sequences of a virus in a patient's blood?


A) Southern blotting
B) creation of a gene library
C) electroporation
D) genome mapping
E) xenotransplantation

F) B) and D)
G) B) and C)

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Which of the following devices is used for PCR?


A) an electrophoresis chamber
B) a gene gun
C) a DNA sequencer
D) a thermocycler
E) a nucleic acid synthesis machine

F) B) and D)
G) A) and C)

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Which of the following microbes produces a protein that kills a variety of insect pests?


A) Pseudomonas
B) Haemophilus influenzae
C) Bacillus thuringiensis
D) Thermus aquaticus
E) Plasmodium falciparum

F) None of the above
G) A) and E)

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Nitrocellulose membranes used in Southern blotting are more delicate than agarose gels.

A) True
B) False

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Which of the following is generally NOT considered an ethical issue regarding recombinant DNA technology?


A) the modification of crop plants
B) screening of humans for genes that predispose them to disease
C) unforeseen impact on the environment
D) the modification of animals to produce pharmaceuticals for humans
E) answering basic research questions

F) A) and E)
G) All of the above

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The use of microbes to make practical products such as vaccines or hormones is called __________.

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The process known as PCR involves the use of


A) DNA polymerase.
B) RNA polymerase.
C) reverse transcriptase.
D) DNA ligase.
E) restriction enzymes.

F) A) and B)
G) None of the above

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Which of the following is essential in PCR?


A) DNA polymerase
B) antisense RNAs
C) reverse transcriptase
D) DNA primers
E) both DNA primers and DNA polymerase

F) None of the above
G) B) and C)

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Synthesis of cDNA __________ requires the use of


A) DNA ligase.
B) agarose.
C) reverse transcriptase.
D) restriction enzymes.
E) fluorescent synthetic nucleotides.

F) A) and B)
G) A) and E)

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Injecting DNA into cells can be accomplished using


A) nitrocellulose membranes.
B) silicon chips and nucleic acids.
C) compressed air and gold beads.
D) micropipettes.
E) micropipettes, or compressed air and gold beads.

F) All of the above
G) C) and E)

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The process of locating genes within the nucleic acid of an organism is called __________ mapping.

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Which of the following items is NOT a part of the name of a restriction enzyme?


A) the Gram reaction of the source bacterium
B) the specific epithet of the source bacterium
C) Roman numerals to indicate its order of discovery
D) the strain of the source bacterium
E) the genus of the source bacterium

F) None of the above
G) A) and C)

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Compare and contrast the two major types of restriction enzymes.

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All restriction enzymes recognize specif...

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