Which molecule becomes "charged" with an amino acid on its 3' end?
a. snRNA
b. tRNA
c. mRNA
d. pre-mRNA
Answer: b. tRNA
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In a stream that flows over limestone you would predict there would be higher
A) solute concentrations. B) temperatures. C) flows. D) biodiversity.
Antibiotics incorporated into the culture medium can ________.
A. select against organisms that have not incorporated the plasmid and select against organisms that have incorporated a plasmid not containing the desired gene B. select against organisms that have not incorporated the plasmid C. enhance production of recombinant proteins D. select against organisms that have incorporated a plasmid not containing the desired gene
Ok at the schematic diagram of a simple self-replicating system. Such a system demonstrates that:
a. natural selection is occurring. b. replication is occurring given specific substrates. c. replication can occur independent of substrates. d. variation can be induced in a system.
Which of the following must be accomplished FIRST in order to conduct RT-PCR?
A) Complementary DNA must be synthesized from double-stranded DNA. B) Complementary DNA must be synthesized from RNA. C) Complementary DNA must be synthesized from proteins. D) Complementary DNA must be synthesized from single-stranded DNA.