Copies of recombinant DNA are produced in a genetically engineered organism by ____
a. reverse transcriptase
b. exonucleases
c. restriction endonucleases
d. DNA ligase
e. DNA polymerase
ANSWER: e
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Which of the following type of reversible enzyme inhibitor always lowers the measured Km of the enzyme it binds?
A. competitive B. uncompetitive C. mixed D. uncompetitive and mixed E. competitive, uncompetitive, and mixed
The region within the prokaryotic cell where the DNA is located is known as the ________.
Fill in the blank(s) with the appropriate word(s).
The Ixodes tick can infect humans with Borrelia burgdorferi during which stage(s) of its life cycle?
A. only as a larva B. only as a nymph C. only as an adult D. either as a nymph or an adult E. either as a larva or a nymph
An accident victim receives a blood transfusion. Shortly thereafter, he begins to have difficulty breathing, develops a fever, and experiences nausea and vomiting. Which of the following is the most likely interpretation of these events?
A. the blood transfusion was mismatched. B. the blood transfusion contained pyrogens. C. the recipient had previously been exposed to foreign blood group antigens. D. the blood transfusion was mismatched and contained pyrogens. E. the blood transfusion was mismatched and the recipient had previously been exposed to the foreign blood group antigens.