Chapter 9 - Multiple Choice

Question 1

Microbial control methods that kill _____ are to able to sterilize.

a. viruses
b. the trubercle bacillus
c. endospores
d. cysts

Answer 1

c

Question 2

Sanitization is a process by which

a. the microbial load on objects is reduced.
b. objects are made sterile with chemicals
c. utensils are scrubbed
d. skin is debrided

Answer 2

a

Question 3

An example of an agent that lowers the surface tension of cell is

a. phenol
b. chlorine
c. alcohol
d. formalin

Answer 3

c

Question 4

High temperatures _____ and low temperatures _____.

a. sterilize; disinfect
b. kill cells; inhibit cell growth
c. denature proteins; burst cells
d. speed up metabolism; slow down metabolism

Answer 4

b

Question 5

Microbe(s) that is/are the target(s) of pasteurization include

a. Clostridium botulinum
b. Mycobacterium species
c. Salmonella species
d. both b and c

Answer 5

d

Question 6

The primary mode of action of non-ionizing radiation is to:

a. produce superoxide ions
b. make pyrimidine dimers
c. denature proteins
d. break disulfide bonds

Answer 6

b

Question 7

The most versatile method of sterilizing heat-sensitive liquids is

a. UV radiation
b. exposure to ozone
c. beta propiolactone
d. filtration

Answer 7

d

Question 8

Select the correct sequence, from least to most resistant.

a. most gram-negative bacteria, enveloped viruses, prions
b. most gram-negative bacteria, staphylococcus, enveloped viruses
c. most gram-negative bacteria, most gram-positive bacteria, prions
d. enveloped viruses, protozoan cysts, bacterial endospores
e. enveloped viruses, most gram-negative bacteria, most gram-positive bacteria

Answer 8

d