Chapter 7 The Control of Microbial Growth

Question 1

microbial contamination

Answer 1

sepsis

Question 2

absence of significant contamination

Answer 2

asepsis

Question 3

removing of all microbial life

Answer 3

sterilization

Question 4

killing of C. botulinum endospores

Answer 4

commercial sterilization

Question 5

removing of pathogens

Answer 5

disinfection

Question 6

removing pathogens from living tissue

Answer 6

antisepsis

Question 7

removing microbes from a limited area

Answer 7

degerming

Question 8

lowing microbial counts on eating utensils

Answer 8

sanitization

Question 9

kills microbes

Answer 9

biocide/germicide

Question 10

inhibiting, not killing microbes

Answer 10

bacteriostatsis

Question 11

Effectiveness of treatments depends on?

Answer 11

number of microbes
enviornment
time of exposure
microbial characteristics

Question 12

alteration of membrane permeability, damage to proteins, and damage to nucleic acids are?

Answer 12

mechanisms of action/ control agents

Question 13

lowest temp at which all cells are killed in 10 mins

Answer 13

thermal death point (TDP)

Question 14

time during which all cells in culture are killed

Answer 14

thermal death time (TDT)

Question 15

moist heat sterilization does what?

Answer 15

denatures proteins

Question 16

autoclave uses what kind of sterilization technique?

Answer 16

moist heat, steams under pressure

Question 17

reduces spoilage organisms and pathogens

Answer 17

pasteurization

Question 18

pasteurization uses what technique?

Answer 18

high heat, short time

Question 19

dry heat sterilization kills by?

Answer 19

oxidation

Question 20

Dry heat
flaming
incineration
hot-air 
are examples of?

Answer 20

dry heat sterilization

Question 21

what uses HEPA to possibly sterilize through tiny pores

Answer 21

filtration

Question 22

low temp
high pressure
desiccation
osmotic pressure
are what king of microbial control techniques?

Answer 22

physical methods

Question 23

refirgeration
deep freezing
lyphophilization
are what kind of physical control method?

Answer 23

low temp

Question 24

what denatures proteins?

Answer 24

high pressure

Question 25

what prevents metabolism?

Answer 25

desiccation

Question 26

what causes plasmolysis?

Answer 26

osmotic pressure

Question 27

ionizes water to release o2
damages DNA
using Xrays Gamma rays and electron beams

Answer 27

Ionizing radiation

Question 28

only damages DNA

using UV

Answer 28

non ionzing radiation

Question 29

kills by heat but not anitmicrobial

Answer 29

micorwaves

Question 30

concentration of disinfectant
organic matter
pH
Times

Answer 30

principles of effective disinfection