In the figure above, representing transcription, the item labeled "B" is
a. the nontemplate strand.
b. RNA-DNA hybrid.
c. DNA double helix.
d. the RNA copy.
e. the template strand.
A
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Huntington disease in humans is an example of a(n) ____________
A. essential gene B. lethal allele C. semilethal allele D. nonessential gene E. conditional lethal allele
The ATP "high-energy" or "energy-rich" bonds are which of the following types of bond?
A) phosphoester B) phosphoanhydride C) hydrogen D) ionic E) monophosphate
The human immunodeficiency virus (HIV) is an example of a retrovirus. In order to prevent incorporation of the viral DNA into the host genome, antiretroviral drugs could
A) inhibit the viral reverse transcriptase. B) inhibit retro-RNA polymerase. C) inhibit polyadenine removal. D) inhibit the viral reverse transcriptase and polyadenine removal. E) None of these are good antiretroviral strategies.
The largest viruses known are the ________.
A. hepadnaviruses B. mimiviruses C. adenoviruses D. herpesviruses