Propose a unique target for a drug that would inhibit replication of retroviruses in humans
What will be an ideal response?
Answer: Students could choose to discuss protease, integrase, or reverse transcriptase enzymes, all of which are found in the nucleocapsid of retroviruses and are unique enzymes that have no eukaryotic equivalents. Answers should explain why their target does not have an equivalent in the human host cell. Students could also discuss cell surface receptor proteins, although these proteins were not discussed in detail in this chapter.
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Which of the following may form one colony?
A. A single bacterial cell B. A small clump of bacteria C. A short chain of bacteria D. All of the choices are correct.
Once cytoplasmic sensor proteins involved in chemotaxis regulation are phosphorylated, a cascade of other phosphate-transferring mechanisms provide ATP energy to rotate flagella
Indicate whether the statement is true or false.
When the F factor is integrated, all Hfr strains have the origin of replication functioning in the same direction
Indicate whether the statement is true or false.
Unlike most other animals, sponges lack which of the following?
a. a digestive tract only b. a symmetrical body plan only c. tissues only d. a digestive tract and a symmetrical body plan only e. a digestive tract, a symmetrical body plan, and tissues