Micro Packet 4 Flashcards Preview

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Flashcards in Micro Packet 4 Deck (41)
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1

To reduce or eliminate bacterial growth depends on...

number, species, temperature, pH & organic matter

2

Bacterial Death can result from damage to...

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

3

_____________ denatures enzymes.

Heat

4

An example of moist heat is the...

Autoclave

5

Autoclave is heat under...

Pressure

6

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

15 lbs psi + 121 c

7

Kills bacteria and spores

Inceration

8

Example of dry heat

flaming the loops

9

Best for heat labile material.

Filtration

10

Causes death of mutations and there are two types.

Radiation

11

Two types of radiation

Ionizing
Ultraviolet

12

Kills bacteria

Bactericidal

13

Radiation such as gamma or x-ray

Ionizing

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.

Ionizing

15

Low penetrating power

Ultraviolet Radiation

16

To kill, it must be exposed directly to the organism

Ultraviolet radiation

17

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

Ultraviolet radiation

18

Two chemical methods of sterilization...

Antiseptics
Disinfectants

19

Prevent growth or arrest the development of the microbes

Antiseptics

20

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

Disinfectants

21

__________ + ___________ denature proteins.

Phenols + Phenolics

22

Have a detergent like affect on the cell membrane

Phenols + Phenolics

23

Can be added to soaps to increase cleansing properties

Phenols + Phenolics

24

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

Phenols + Phenolics

25

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

Chlorine

26

Helps to make tinctures.

Iodine

27

made of iodine + ethyl alcohol

tinctures

28

Applied to wounds

tinctures

29

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

iodophors

30

The most effective disinfectant

70% Ethyl alcohol