Micro Lab Test #2 Disinfections/Antibiotics Practice Questions

Boiling water and pasteurization WILL sterilize

True or False

False

Broad-spectrum drugs are effective

on a large range of cell types

Cold is microbistatic which means it

Slows or stops the growth of microbes

Rifampin works by

Inhibiting RNA polymerase

To mechanically sterilize the air in a clean room you would use

Filtration

Which anti-microbial affects protozoa

Quinine

Which drug is anti-fungi

Amphotericin B

Antibiotic A yields a large zone of inhibition while antibiotic B yields a small zone of inhibition, which should you give to your patient?

Antibiotic A

Drug resistance can be acquired by

Spontaneous mutations and acquisition of genes via transfer

Factors that Affect Germicidal Activity of Chemicals would be

Nature of the material being treated

Degree of contamination

Time of exposure

Strength and chemical action of the germicide

Heat and radiation are ______________ microbial control methods

physical

Ionizing radiation controls microbial growth by

Breaking ds DNA

Microbes can get around antimicrobial drugs through

Drug inactivation

Decreased permeability

Activation of drug pumps or change in the drug binging site

Use of alternative metabolic pathways

Penicillin works by

Block peptidoglycan synthesis

The destruction or removal of vegetative pathogens but not endospores is

Disinfection

The ideal microbial drug would be

Easy to administer

Selectively toxic

Microbicidal

What is true about Chloramphenicol

This drug affects the 50S ribosome

This drug affects protein synthesis

This drug can be considered an antimicrobial

_______________ can be used on human skin.

Antiseptic

What kills bacterial endospores?

Sporocide

Which drug does NOT affect viruses?

Tetracyclines

What is the method of disinfection for dry heat

physical method

What is the method of disinfection for bleach

What is the method of disinfection for air filter

mechanical method