The following are steps used to make DNA fingerprints. What is the third step? |
Digest with a restriction enzyme. |
The reaction catalyzed by reverse transcriptase is |
mRNA → cDNA. |
Which of the following is an advantage of using E. coli to make a human gene product? |
Its genes are well known. |
Which of the following is NOT an agricultural product made by DNA techniques? |
Pectinase |
If you have inserted a gene in the Ti plasmid, the next step in genetic engineering is |
Inserting the Ti plasmid into Agrobacterium. |
Biotechnology involves the |
Use of microorganisms to make desired products, the use of animal cells to make vaccines, and the development of disease-resistant crop plants. |
Which of the following is NOT a desired characteristic of DNA vectors used in gene cloning procedures? |
Large size. |
An advantage of synthetic DNA over genomic or cDNA is the ability to |
Insert desired restriction sites into the DNA sequence. |
An advantage of cDNA over genomic DNA is that it |
Lacks introns. |
Pieces of DNA stored in yeast cells are called a |
Library. |
A population of cells carrying a desired plasmid is called a |
Clone. |
Self-replicating DNA used to transmit a gene from one organism to another is a |
Vector. |
The Human Genome Project, which was completed in 2003, was focused on |
Determining the nucleotide sequence of the entire human genome. |
A colleague has used computer modeling to design an improved enzyme. To produce this enzyme, the next step is to |
Determine the nucleotide sequence for the improved enzyme. |
You have a small gene that you wish replicated by PCR. After 3 replication cycles, how many |
8 double-stranded DNA molecules. |
Which of the following are used to silence specific genes and hold promise for treating cancer or viral diseases, such as hepatitis B? |
RNA interference (RNAi) |
Which of the following techniques is NOT used to introduce recombinant DNA into plants? |
Microinjection. |
A source of heat-stable DNA polymerase is |
Thermus aquaticus. |
Gene silencing blocks an undesirable product by |
Making double-stranded RNA. |
You want to determine whether a person has a certain mutant gene. The process involves using a |
PCR |
Assume you have discovered a cell that produces a lipase that works in cold water for a laundry additive. You can increase the efficiency of this enzyme by changing one amino acid. This is done by |
Site-directed mutagenesis. |
The use of an antibiotic-resistance gene on a plasmid used in genetic engineering makes |
Direct selection possible. |
The use of "suicide" genes in genetically modified organisms is designed to |
Prevent the growth of the modified organisms in the environment. |
A restriction fragment is |
A segment of DNA. |
In the Southern blot technique, which of the following is NOT required? |
Addition of heat-stable DNA polymerase to amplify DNA |
Which of the following processes is NOT involved in making cDNA? |
Translation. |
PCR can be used to identify an unknown bacterium because |
The RNA primer is specific. |
The random shotgun method is used in |
Genome sequencing. |
Restriction enzymes are |
Bacterial enzymes that destroy phage DNA. |
The study of genetic material taken directly from the environment is |
Metagenomics. |
The term biotechnology refers exclusively to the use of genetically engineered organism for the production of desired products. |
False |
In recombinant DNA technology, a vector is a self replicating segment of DNA, such as a plasmid or viral genome. |
True |
The practice of breeding plants and animals for desirable traits, such as high crop yield, is called natural selection. |
False |
A shuttle vector is a plasmid that is used to move pieces of DNA among organisms, such as bacterial, fungal, and plant cells. |
True |
Nearly all cells, including E. coli and yeast, naturally take up DNA from their surroundings without chemical treatment. |
False |
The disadvantage of genomic libraries over cDNA libraries is that genomic libraries contain gene introns. |
True |
One of the first commercial successes of recombinant DNA technology was the production of human insulin using genetically engineered E. coli |
True |
Bioinformatics is the use of computer technology to compare and analyze genome sequence. |
True |
The Ti plasmid isolated from Agrobacterium can be used to insert DNA into any type of plant. |
False |
The Bt toxin derived from Bacillus thuringiensis has been introduced into some crop plants to make them resistant to insect destruction. |
True |
Exam chapter 9
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