Most drugs used to slow the progress of AIDS fall into which of the following categories?
A. Protein synthesis inhibitors
B. RNA polymerase II inhibitors
C. Topoisomerase inhibitors
D. Reverse transcriptase and protease inhibitors
Answer: D
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Why would you have bothered to spend 10 years looking for a fossil ancestor of your new species?
A. to calibrate the time scale of your phylogeny that is based on molecular/anatomical data. B. to reconstruct the environment, and possible selective pressures, on these lineages. C. to better understand anatomical changes that occurred during the evolution of this lineage. D. None of a-c are correct. E. All of a-c are correct.
____detect changes in pressure and convert this stimulus energy into ____
a. Thermoreceptors; action potentials b. Mechanoreceptors; action potentials c. Chemoreceptors; resting potentials d. Photoreceptors; resting potentials e. Osmoreceptors; threshold potentials
In a(n) ____ translocation, two nonhomologous chromosomes exchange parts and no genetic information is gained or
lost from the cell in the exchange. a. cri du chat b. XXY c. copy number d. Robertsonian e. reciprocal
The components of the second line of defense against microbes may be characterized as
A) responders to invasion. B) passive barriers. C) mechanisms to strengthen the first line of defense. D) detecting the unique features of specific pathogens. E) both passive barriers and detecting specific pathogen features.