HIV has an RNA genome that is converted to DNA when infecting a human immune cell. This type of virus is called a ________
A) bacteriophage
B) prion
C) retrovirus
D) reverse transcriptase
C
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What are behaviors intended to attract a member of the opposite sex for mating?
a. intrasexual selection b. kin selection c. courtship displays d. mate-guarding
In glycolysis, glucose is converted to
What will be an ideal response?
Which one of the following statements is TRUE regarding the water on Earth?
A) When humans divert water from one region to another, they always ensure that it does not have an effect on normal migration patterns of other species. B) Most of the water on Earth is frozen in glaciers and ice caps. C) Residents of the less industrialized countries typically use more water than residents in industrialized countries. D) Some semiarid and desert regions of the world have reached carrying capacity for humans due to the shortage of water. E) Water is considered a renewable resource because it is plentiful in all regions of Earth.
How do polypeptide drugs work?
A) They target the 50S subunit of prokaryotic ribosomes to block protein synthesis. B) They target the DNA replication enzymes DNA gyrase and topoisomerases. C) They act as competitive inhibitors of folic acid production. D) They interact with lipopolysaccharide and destabilize the outer membrane of the Gram-negative cell wall where they can then further destabilize the plasma membrane to cause cytoplasmic leakage and cell lysis. E) They work by inhibiting transpeptidase enzymes that are central to building peptidoglycan by forming the protein crosslinks that bind peptidoglycan's carbohydrate chains together in a chain link fence-like structure.