Which class of drugs would be effective against HIV but not against most other pathogenic viruses?
A. Translation inhibitors that stop assembly of viral proteins
B. Receptor antagonists that block viral entry
C. Non-nucleoside reverse transcriptase inhibitors that block reverse transcription
D. Nucleotide analogs that halt replication
Answer: C
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Water is important to the interactions of biological molecules because it ____
a. is a good buffer b. destabilizes temperature c. is a poor solvent for polar and ionic substances d. has weak cohesive properties e. promotes hydrophobic and hydrophilic interactions
Which of the following types of teeth would be least prevalent and possibly absent in an herbivore?
a. incisors only b. premolars only c. molars only d. canines only e. both premolars and molars
The Sanger sequencing approach developed in the 1970s
A. has been rendered obsolete by the development of fundamentally different methodologies. B. is still the main approach used to determine nucleotide sequences. C. is applicable to RNA but not DNA. D. is useful for sequencing small DNAs but is not applicable to genome sized DNA molecules.
The process of phosphorylation
A. All of the answer choices are correct. B. may change the shape of the target molecule. C. adds a phosphate group to a molecule. D. removes a phosphate group from a molecule. E. may energize the target molecule.