11) Restriction enzymes mainly derived from:
D) animal : 1380827.
11) Restriction enzymes are mainly derived from:
D) animal cells.
12) What is used to cut DNA in generating recombinant DNA?
D) restriction enzymes
13) What is the function of restriction enzymes in bacteria?
A) They are used to repair DNA mutations.
B) They function in protein production.
C) They cut the bacterial cell’s chromosome so that it is more easily transformed.
D) They cut foreign DNA, for example, the DNA of invading viruses.
14) What is a “cloning vector”?
A) an enzyme used to cut or combine DNA
B) a cell that is producing protein from a recombinant plasmid
C) a DNA vehicle that carries recombinant DNA into cells
D) a protein such as HGH that is produced by biotechnology
15) One advantage of using bacteria in recombinant DNA technology is that they have a ring of DNA that is not part of their chromosome called a:
D) restriction fragment.
16) Which choice is an example of “recombinant DNA”?
A) DNA that has been amplified by PCR
B) any DNA that has been removed from a cell
C) DNA that has been cut with a restriction enzyme
D) a bacterial plasmid combined with a human gene
17) What roles do plasmids play in biotechnology?
A) Plasmids are used to provide nutrients to bacterial cells.
B) Plasmids are used to break open the cell wall of bacterial cells.
C) Plasmids are used to infect and destroy bacterial cells.
D) Plasmids are used as a vector to transfer genes between organisms.
18) Much of the food crops in the United States are transgenic. This primarily has been done to give the crops what properties?
A) a decrease in the need for chemical fertilizers
B) the ability to produce human growth hormone
C) the ability to resist insects and herbicides
D) the need for greater irrigation
19) “Golden rice” is a transgenic form of rice because it:
A) produces omega-3 fatty acids.
B) contains genes from a bacterium and a daffodil.
C) produces insulin.
D) produces cancer-fighting drugs.
20) It is beneficial for children in underdeveloped countries to eat genetically modified “golden rice,” rather than regular rice, because golden rice:
A) tastes better.
B) produces a vitamin A precursor, which helps prevent blindness in children.
C) does not cost as much as regular rice.
D) prevents diarrhea in children.