Micro Packet 4

Question 1

To reduce or eliminate bacterial growth depends on…

Answer 1

number, species, temperature, pH & organic matter

Question 2

Bacterial Death can result from damage to…

Answer 2

1) Cell Wall
2) Cell Membrane
3) Proteins
4) Nucleic Acid (DNA/RNA)

Question 3

_____________ denatures enzymes.

Answer 3

Heat

Question 4

An example of moist heat is the…

Answer 4

Autoclave

Question 5

Autoclave is heat under…

Answer 5

Pressure

Question 6

Autoclave kills bacteria & spores at ______ psi + _______ for 15 minutes.

Answer 6

15 lbs psi + 121 c

Question 7

Kills bacteria and spores

Answer 7

Inceration

Question 8

Example of dry heat

Answer 8

flaming the loops

Question 9

Best for heat labile material.

Answer 9

Filtration

Question 10

Causes death of mutations and there are two types.

Answer 10

Radiation

Question 11

Two types of radiation

Answer 11

Ionizing

Ultraviolet

Question 12

Kills bacteria

Answer 12

Bactericidal

Question 13

Radiation such as gamma or x-ray

Answer 13

Ionizing

Question 14

This type of radiation cannot be used to sterilize heat labile solutions in plastic, and is used in the medical and dental supply industries.

Answer 14

Ionizing

Question 15

Low penetrating power

Answer 15

Ultraviolet Radiation

Question 16

To kill, it must be exposed directly to the organism

Answer 16

Ultraviolet radiation

Question 17

Solids like paper, glass and plastic will protect the organism by covering it.

Answer 17

Ultraviolet radiation

Question 18

Two chemical methods of sterilization…

Answer 18

Antiseptics

Disinfectants

Question 19

Prevent growth or arrest the development of the microbes

Answer 19

Antiseptics

Question 20

Chemicals that kill bacteria (Ex: halogens, heavy metals, acids, organic compounds & dyes)

Answer 20

Disinfectants

Question 21

__________ + ___________ denature proteins.

Answer 21

Phenols + Phenolics

Question 22

Have a detergent like affect on the cell membrane

Answer 22

Phenols + Phenolics

Question 23

Can be added to soaps to increase cleansing properties

Answer 23

Phenols + Phenolics

Question 24

These are an active ingredient in mouthwash + sore throat preps.

Answer 24

Phenols + Phenolics

Question 25

When added to water this forms a hypochlorous acid which acts on the enzymes of the microbes.

Answer 25

Chlorine

Question 26

Helps to make tinctures.

Answer 26

Iodine

Question 27

made of iodine + ethyl alcohol

Answer 27

tinctures

Question 28

Applied to wounds

Answer 28

tinctures

Question 29

When iodine combines with organic compounds which combine with nonionic detergents, what is formed?

Answer 29

iodophors

Question 30

The most effective disinfectant

Answer 30

70% Ethyl alcohol

Question 31

Bactericide + fungicide and is not effective against viruses

Answer 31

70% Ethyl Alcohol

Question 32

Examples of heavy metals

Answer 32

Silver, Mercury, Copper

Question 33

Least effective disinfectant

Answer 33

Soap

Question 34

Detergents that disrupt the plasma membrane

Answer 34

Quaternary Ammonium Compounds

Question 35

Are a bactericidal, arrest growth (esp. gram positive), are also a fungicidal and viruicidal for enveloped viruses.

Answer 35

Quaternary Ammonium Compounds

Question 36

Ethylene oxide is used to sterilize petri dishes.

Answer 36

Gas

Question 37

Control growth in food

Answer 37

Organic Acids

Question 38

Example of an Aldehyde

Answer 38

Glutaraldehyde

Question 39

used to disinfect hospitals, it is safe to transport, acts rapidly, and does not stain or corrode. Used on lenses & equipment for respiratory therapy.

Answer 39

Glutaraldehyde

Question 40

Ozone, H2O2, Iodine and Chlorine.

Answer 40

Oxidizing agents

Question 41

Ozone, Chlorine, Copper sulfate and gamma radiation.

Answer 41

Disinfect water