Ch 13: Quiz

Ultraviolet light is an example of which type of radiation?

C. nonionizing radiation

Nisin is an antimicrobial peptide produced by which bacterium?

B. Lactococcus lactis

What is argyria?

A. a buildup of silver in the body resulting in blue-gray skin

The autoclave uses which of the following mechanisms(s) for sterilization?

C. pressure and temperature

Which of the following is used to determine if a solution of disinfectant actively used in the clinical setting is contaminated?

B. the in-use test

Which of the following refers to a germicide that can kill vegetative cells and certain enveloped viruses but not endospores?

C. low-level germicide

Which chemical disinfectant works by methylating enzymes and nucleic acids and is known for being toxic and carcinogenic?

C. formaldehyde

Which of the following chemical food preservatives is used in the wine industry but may cause asthmatic reactions in some individuals?

B. sulfites

Mercury-based compounds have fallen out of favor for use as preservatives and antiseptics

True

catheter

critical

colonoscope

semi-critical

duodenoscope

semi-critical

sonogram probe

non critical

sphygmomanometer (blood pressure cuff)

non critical

Sonication causes cavitation in cells

True

Which of the following is suitable for use on tissues for microbial control to prevent infection?

B. antiseptic

Which of the following actions would be most clearly considered bacteriostatic rather than bactericidal?

B. placing a bacterial culture in the -80 C freezer

Microbial death follows which type of trend?

B. logarithmic

Which best describes how heavy metals can control microbial growth?

A. by binding to sulfur-containing amino acids

Which halogen or halogen-containing compound is typically used as a form of topical antisepsis?

D. iodophor

antisepsis

a chemical process used to control microbial growth on body surfaces

asepsis

a technique used to prevent contamination to maintain sterility

disinfection

a chemical process used to control microbial growth on inanimate objects

pasteurization

a process that kills non-spore forming pathogenic pathogens

sanitization

lowering microbial load to public health standards

Which of the following is not an alkylating agent?

Chlorhexidine

heavy metals

bind to sulfur-containing amino acids to inhibit enzyme activity

alcohols

denature proteins and disrupt membrane integrity

soaps

physically remove a microbe from a surface

gamma rays

damage DNA molecules