Chap 5

Question 1

removal or destruction of all microorganisms and viruses
-free of microbes including endospores but not prions

Answer 1

Sterilization

Question 2

chemicals used on objects, often called germicides

Answer 2

Disinfection

Question 3

chemicals used on living tissues

Answer 3

Antiseptics

Question 4

reduces the number of pathogens to a safe level (heating, washing, chemicals)

Answer 4

Decontamination

Question 5

reduces microbial population to meet accepted health standards that minimize spread of disease

Answer 5

Sanitization

Question 6

brief heating to reduce and destroy pathogens in food

Answer 6

Pasteurization

Question 7

used when patient is infected with a highly transmissible disease

Answer 7

Transmission-Based Precautions

Question 8

An exponential increase in the number of bacterial cells in a sample occurs during the — phase

Answer 8

log

Question 9

Turbidity is —- of a microbial suspension and is a way to measure —-

Answer 9

cloudiness/biomass

Question 10

only extreme heat or chemical treatment destroys them

Answer 10

bacterial endospores

Question 11

increased pressure raises steam temperature, kills endospores

Answer 11

Autoclave

Question 12

destroys DNA and damages cytoplasmic
membranes, destroys endospores

Answer 12

Ironizing radiation

Question 13

destroys microbes directly (not endospores), damages DNA

Answer 13

Ultraviolet radiation

Question 14

chemicals can disinfect and sterilization

Answer 14

Germicidal

Question 15

denatures protein, boiling destroys most microorganisms and viruses

Answer 15

Moist heat