2. What is the purpose of gene cloning in agriculutral biotechnology?
To make multiple copies of a desired gene so a characteristic of that gene can be altered.
To make multiple colonies of cells that contain extracted DNA .
To create multiple copies of a gene to grow DNA.
To identify a gene of interest and make multiple copies of plasmids that contain the gene of interest.

3. What is a gene library?
A collection of living proteins that are used in the process of gene cloning.
A collection of books that define all the genes known by genetic engineers.
A collection of living bacteria colonies that have been transformed with different pieces of DNA from the organism that is the source of the gene of interest.
A collection of plasmids that genetic engineers screen to insure that the genes they are going to clone are not dead.

4. What is the purpose of a "gene library"?
To help a genetic engineer identify which gene sequences contain the DNA of interest.
To identify which cells encode a particular protein.
To help a genetic engineer identify which bacteria colonies contain the gene of interest.
To give the genetic engineer a quick "book-shelf" reference of written topic on genes

5. What is a restriction enzyme?
A specific enzyme that reads the nucleotide sequence of the DNA, recognizes specific sequences of the DNA and then cuts the DNA sequence by breaking the bonds between nucleotides in a DNA strand.
A specific enzyme that restricts the growth of the DNA, so that the DNA can not be cloned..
An enzymes that encode the sequence of the DNA, the enzyme then produces a DNA sequence by breaking the bonds between nucleotides in a DNA strand.
A specific enzyme that restricts the growth of the DNA limiting the number of genes that can be cloned.

6. How can genetic engineers identify a desired gene in a gene colony?
By screening for a specific DNA sequence of the cloned gene.
By screening and detecting a specific protein that the gene encodes.
By using a linked DNA maker.
all of the above

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