You wish to design a drug that acts against a recently identified retrovirus. Based upon what you know about retroviruses, which of the following would be the best target for specifically interrupting the viral life cycle in eukaryotic cells?
A) primase
B) 30S ribosomal subunits
C) reverse transcriptase
D) RNA polymerase
E) DNA polymerase
C) reverse transcriptase
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Tissues functioning together make up _____
A) organs B) membranes C) organ systems D) organelles E) organisms
The rationale for including the plasmid that was not cloned with the linker was
A. the plasmid without the linker served as a positive control to demonstrate that the assay was performing as expected B. that the plasmid was used to make sure there was no RNA degradation C. the plasmid was used to make sure there was no DNA degradation D. the plasmid was included as a carrier to help separate the RNA that was produced from the unincorporated radioactive nucleotides. Bloom's Level:
If a person had the thymus gland removed, which process would be most affected in his or her body?
a. maturation of B cells b. production of B cells c. production of T cell d. maturation of T cells
Scientists have found that the existing populations of a certain species of amphibian are small in number, lacking in genetic diversity, and separated from each other by wide areas of dry land. Which of the following human actions is most likely to improve the long-term survival of the amphibians?
A) Cloning the largest individuals to counteract the effects of aggressive predation B) Reducing the population size by one-fifth to decrease competition for limited resources C) Constructing a dam and irrigation system to control flooding D) Building ponds in the areas of dry land to promote interbreeding between the separated populations