To answer questions 76–80 refer to the four items listed below
a. cDNA
b. restriction enzyme
c. reverse transcriptase
d. gene library
M 76. This is from a viral source and catalyzes reactions to
construct DNA strands from mRNA.
M 77. This is any DNA made from mRNA transcripts.
M 78. This is a nuclease whose only function is to cut apart
foreign DNA entering a cell.
M 79. These are collections of host cells that house cloned
DNA.
M 80. This is an enzyme used to produce cDNA.
Answers: 76. c, 77. a, 78. b, 79. d, 80. c
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