Unit 2 Microbiology Test

Ionizing radiation can penetrate surfaces, but nonionizing radiation cannot. True or False

True

Moist-heat sterilization protocols require the use of higher temperatures for longer periods of time than do dry-heat sterilization protocols. True of False

False

Sanitization leaves an object free of microbes. True or False

False

Which of the following would be classified as a critical clinical item? a) surgical scalpel b) gastrointestinal endoscope c) bed linens d) sethoscope

a) surgical scalpel

Which of the following is suitable for use on tissues for microbial control to prevent infection? a) antiseptic b) water c) sterilant d) disinfectant

a) antiseptic

Which of the following categories of clinical items need to be sterilized? a) critical items only b) critical and semicritical items c) critical, semicritical, and noncritical items

a) critical items only

Refrigeration inhibits bacterial metabolism and slows microbial growth. But it does not kill microbes. In regards to bacterial growth, refrigeration is a) bactericidal OR b) bacteriostatic

b) bacteriostatic

Which of the following microbial control methods does not actually kill microbes or inhibit their growth but instead removes them physically from samples? a) ionizing radiation b) filtration c) desiccation d) lyophilization

b) filtration

Bleach is an example of which group of chemical used for disinfection? a) heavy metals b) halogens c) bisbiguanides d) peroxygens

b) halogens

Which biosafety level is appropriate for research with microbes or infectious agents that pose moderate risk to laboratory workers and the community. a) BSL-3 b) BSL-1 c) BSL-4 d) BSL-2

d) BSL-2

Which of the following chemical used in microbial control is a sterilant? a) chlorine b) mercury c) chlorhexidine d) ethylene oxide

d) ethylene oxide

Which of the following best describes a microbial control protocol that inhibits the growth of molds and yeasts? a) bacteriostatic b) fungicidal c) bactericidal d) fungistatic

d) fungistatic

Which microbial control method consists of treatment at 72 degrees Celsius for 15 seconds? a) boiling b) autoclaving c) ultra-high temperature pasteurization d) high-temperature short-time pasteurization

d) high-temperature short-time pasteurization

Which of the following peroxgens is widely used as a household disinfectant, is inexpensive, and breaks down into water and oxygen gas? a) benzoyl peroxide b) ozone c) peracetic acid d) hydrogen peroxide

d) hydrogen peroxide

Which of the following microbial control measures is a sterilant? a) pasteurization b) refrigeration c) lyophilization d) ionizing radiation

d) ionizing radiation