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The reaction catalyzed by reverse transcriptase is


A) DNA → mRNA.
B) mRNA → cDNA.
C) mRNA → protein.
D) DNA → DNA.
E) tRNA → mRNA.

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

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The following steps must be performed to make a bacterium produce human protein X. 1-Translation 2-Restriction enzyme 3-Prokaryotic transcription 4-DNA ligase 5-Transformation 6-Eukaryotic transcription 7-Reverse transcription Which of the following places the steps in the correct order?


A) 5,2,3,4,7,6,1
B) 1,2,3,5,4,7,6
C) 6,7,2,3,4,5,1
D) 6,7,2,4,5,3,1
E) 6,2,1,3,4,5,7

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

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Biotechnology involves the


A) use of microorganisms to make desired products.
B) use of animal cells to make vaccines.
C) development of disease-resistant crop plants.
D) use of microorganisms to make desired products and the use of animal cells to make vaccines.
E) use of microorganisms to make desired products,the use of animal cells to make vaccines,and the development of disease-resistant crop plants.

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

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The term biotechnology refers exclusively to the use of genetically engineered organisms for the production of desired products.

A) True
B) False

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The local public health agency has received reports of an outbreak of Salmonella gastroenteritis among attendees at a city-sponsored chili cook-off.What techniques from recombinant DNA technology would the agency likely use to investigate this outbreak? Describe the expected results from these techniques.

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Figure 9.5 Figure 9.5    -In Figure 9.5,the marker genes used for selecting recombinant DNA are A) HindIII,BamHI,and EcoRI. B) ampᴿ and lacZ. C) ori. D) ampᴿ and ori. E) lacZ and ori. -In Figure 9.5,the marker genes used for selecting recombinant DNA are


A) HindIII,BamHI,and EcoRI.
B) ampᴿ and lacZ.
C) ori.
D) ampᴿ and ori.
E) lacZ and ori.

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

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Figure 9.5 Figure 9.5    -Which of the following methods would be used to introduce the plasmid shown in Figure 9.5 into E.coli? A) microinjection B) transformation C) gene guns D) Ti plasmids and Agrobacterium -Which of the following methods would be used to introduce the plasmid shown in Figure 9.5 into E.coli?


A) microinjection
B) transformation
C) gene guns
D) Ti plasmids and Agrobacterium

E) C) and D)
F) A) and B)

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Which of the following places the steps in the PCR procedure in the correct order? 1) Incubate at 94°C to denature DNA strands; 2) Incubate at 72°C for DNA synthesis; 3) Incubate at 60°C for primer hybridization.


A) 1,2,3
B) 3,2,1
C) 1,3,2
D) 2;1;3
E) 3;1;2

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

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The Human Genome Project,which was completed in 2003,was focused on


A) identifying all of the genes in the human genome.
B) determining the nucleotide sequence of the entire human genome.
C) determining all of the proteins encoded by the human genome.
D) finding a cure for all human genetic disorders.
E) cloning all of the genes of the human genome.

F) C) and E)
G) C) and D)

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Which of the following techniques is NOT used to introduce recombinant DNA into plants?


A) gene guns
B) protoplast fusion
C) Ti plasmids and Agrobacterium
D) microinjection
E) electroporation

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

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In recombinant DNA technology,a vector is a self-replicating segment of DNA,such as a plasmid or viral genome.

A) True
B) False

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Your research group is investigating the possible use of genetically-engineered cells to produce a vaccine for malaria.List the pros and cons of using E.coli,Saccharomyces,and animal cells to produce the vaccine.

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The restriction enzyme EcoRI recognizes the sequence G↓AATTC.Which of the following is TRUE of DNA after it is treated with EcoRI?


A) All of the DNA fragments will have single-stranded regions ending in AA.
B) All of the DNA fragments will have single-stranded regions ending in G.
C) Some of the DNA will have single-stranded regions ending in AA and others will end in G.
D) All of the DNA will have blunt ends.
E) All of the DNA will be circular.

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

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You have a small gene that you wish replicated by PCR.After 3 replication cycles,how many double-stranded DNA molecules do you have?


A) 2
B) 4
C) 8
D) 16
E) thousands

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

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The field of proteomics concerns itself with


A) identifying an organism that makes improved enzymes.
B) discovering the function of genes from a genetic sequence.
C) determining all of the proteins expressed by a cell.
D) synthesizing proteins from altered genetic sequences.
E) identifying pathogens using RFLPs.

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

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An advantage of using Saccharomyces cerevisiae over Escherichia coli to produce a human protein is that


A) it will be more likely to continuously secrete the protein.
B) it will be less likely to express the protein.
C) it has a genome only 4 times larger than E.coli.
D) its genome is well understood unlike E.coli.
E) it can be engineered to produce human proteins unlike E.coli.

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

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If you have inserted a gene in the Ti plasmid,the next step in genetic engineering is


A) transformation of E.coli with Ti plasmid.
B) splicing T DNA into a plasmid.
C) transformation of an animal cell.
D) inserting the Ti plasmid into Agrobacterium.
E) inserting the Ti plasmid into a plant cell.

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

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Nearly all cells,including E.coli and yeast,naturally take up DNA from their surroundings without chemical treatment.

A) True
B) False

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111111 -Which enzyme would cut this strand of DNA? GCATGGATCCCAATGC A) 111111 -Which enzyme would cut this strand of DNA? GCATGGATCCCAATGC A)    B)     C)     D)    E)  B) 111111 -Which enzyme would cut this strand of DNA? GCATGGATCCCAATGC A)    B)     C)     D)    E)  C) 111111 -Which enzyme would cut this strand of DNA? GCATGGATCCCAATGC A)    B)     C)     D)    E)  D) 111111 -Which enzyme would cut this strand of DNA? GCATGGATCCCAATGC A)    B)     C)     D)    E)  E) 111111 -Which enzyme would cut this strand of DNA? GCATGGATCCCAATGC A)    B)     C)     D)    E)

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An advantage of cDNA over genomic DNA is that it


A) lacks exons.
B) lacks introns.
C) contains selectable markers.
D) can form very large DNA segments.
E) is very easy to isolate.

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

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