Prescott's Microbiology Ch. 8 69 Correctly Answered Questions Latest Update

Which of the following environmental factors generally do(es) not have an impact on the efficiency of an antimicrobial agent? {Ans: refractive index}Which of the following is a Gram-negative bacterium that acts as a predator on other Gram-negative bacteria, and might be used to control populations of Gram-negative human pathogens in locations such as poultry farms? {Ans: Bdellovibrio}Heavy metals may inactivate proteins by reacting with their sulfhydryl groups. {Ans: True}Which of the following inhibits bacterial growth but does not kill bacteria? {Ans: Bacteriostatic agent}Dry heat methods usually require lower temperatures and shorter exposure times than moist heat methods to achieve the same degree of killing because of the drying effects of this form of heat. {Ans: False}Moist heat sterilizes by {Ans: denaturing proteins.}