e. It is measured after incubation All of the following statements concerning de
ID: 217292 • Letter: E
Question
e. It is measured after incubation All of the following statements concerning development of antiblotic resistance are true except 7. a. it is often coded for by genes on an R plasmid b. resistant cells are normally in the minority in a population of bacteria c. resistant cells grow better than susceptible cells even in the absence of antibiotic new resistance genes can be gained through transformation, transduction and conjugation resistance can occur by mutations on the chromosome d. e. Beta-lactamase (penicillinase) production is an example of which of the following types of resistance? 8. a. Alteration of the target b. Inactivation of the drug c. Change in the permeability of the drug d. Overproduction of an enzyme in a key metabolic pathway e. Removal of the drug by a pump The type of antimicrobial drug that would be least toxic to humans is a drug that 9. a. Inhibits protein synthesis b. Disrupts the cytoplasmic membrane c. Inhibits nucleic acid synthesis d. Inhibits the synthesis of cell wall 10. Which is a unique macromolecule present in certain viruses that is a target for antiviral drugs? a. Ribosomes b. DNA c. Reverse transcriptase d. RNAExplanation / Answer
7) The correct option is c.resistance cells grow better than susceptible cells even in the absence of antibiotic.
Resistant cells grow more efficiently & quickly than susceptible cells.
8) The correct option is b. inactivation of the drug.
B-lactamase production is an example of inactivation of the drug of resistance.
9) The correct option is d. inhibits the synthesis of the cell wall.
The type of antimicrobial drug that would be least toxic to humans is a drug, which inhibits cell wall synthesis.
10) The correct option is c. reverse transcriptase.
Reverse transcriptase is present in certain viruses, which targets for antiviral agentseverse transcriptase.It is an enzyme used to produced complementary DNA from an RNA template. It is associated with retroviruses.
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.