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bacte > steri and disin > Flashcards

steri and disin Flashcards

1
Q

It is a complete destruction or elimination of all forms of microbial life including bacteria’s viruses fungi any spores

A

Sterilization

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2
Q

Reduction of the number of pathogenic microorganisms on sir face or in animate object to a level considered safe or public health

A

Disinfection

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3
Q

Six physical methods to and he beat microbial growth

A

Heat pressure desiccation radiation sonic disruption filtration

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4
Q

It is most efficient practical and inexpensive method for in animate object and materials that can with stand high temperature

A

Heat

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5
Q

It kills by coagulating proteins

A

Heat

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6
Q

Factors in heat

A

Heat and time

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7
Q

The higher the temperature the shorter the time required to kill the organisms

A

True

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8
Q

It is the lowest temperature that will kill all organisms in a standardize pure culture within a specified period.

A

Thermal death point

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9
Q

The link of the time necessary to sterilize if your culture at a specified temperature

A

Thermal death time

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10
Q

Kills by oxidation

A

Dry heat

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11
Q

coagulation accompanied by hydrolysis

A

Moist heat

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12
Q

Example of dry heat

A

Hot air oven and incineration

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13
Q

temp in Hot air oven within for 2 hours

A

160°C to 165°C

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14
Q

Temperature in Hot air all then for one hour

A

170° to 180°C

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15
Q

It is a type of dry heat for metals glassware some powders audience and waxes

A

Hot air Ovan

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16
Q

Is it a type of dry heat for contaminated disposable materials

A

Incineration

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17
Q

Four wire loops, wire needles, four steps, mouth of tube media and dream of petri dishes

A

Flaming

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18
Q

Example of moist heat

A

Autoclave boiling fractional sterilization inspissation pasteurization

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19
Q

Celsius and minutes in boiling

A

100°C for 15 to 30 minutes

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20
Q

Type of moist heat that kills vegetative forms but not spores and viruses

A

Boiling

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21
Q

It uses steam under pressure

A

Auto clave

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22
Q

Principle of autoclave

A

121°C at 15 psi for 15 to 30 minutes

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23
Q

It steams for 30 minutes for three consecutive days

A

Fractional sterilization

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24
Q

inspissation princple

A

75 to 80°C for two hours for three successive days

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25
Q

It does not kill microorganisms but it slows down their metabolism

A

Cold

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26
Q

It is slows down the growth

A

Refrigeration

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27
Q

It is not used because ice crystals are formed

A

Snow freezing

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28
Q

It uses nitrogen and for preservation

A

Rapid freezing

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29
Q

It places bacteria under suspended animation

A

Rapid freezing

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30
Q

Foods may be preserved by drying

A

Desiccation

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31
Q

Example of desiccation

A

n gonorrhea and MTB

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32
Q

It is for prevention of food spoilage, sterilization of heat sensitive equipment and preparation of vaccine

A

radiation

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33
Q

Four types of radiation

A

Sunlight, UVR, x-rays, gamma rays

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34
Q

It is a type of registration that kills only those exposed to direct sunlight

A

Sunlight

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35
Q

It is a type of registration which uses UV lamp or germicidal lamp

A

UVR

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36
Q

It may be placed in the rooms, cabinets containing instruments, close equipment, liquid and other in animate object

A

You VR

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37
Q

It is a type of registration which reduces number of microorganisms in the air

A

You VR

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38
Q

Disadvantages of UVR

A

DNA replication is inhibited, form thymine dimers, can damage the cornea and skin and do not penetrate load blast and metals

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39
Q

It is a type of graduation with higher energy on higher penetrating power that UV

A

X-rays

40
Q

It produces hydroxyl radicals by the hydrolysis of water

A

X-rays

41
Q

It breaks covalent bonds on the DNA

A

X-rays

42
Q

It breaks covalent bonds on the DNA

A

X-rays

43
Q

spores resistant due to its low water contents

A

X-rays

44
Q

Gamma rays is from

A

Cobalt 60

45
Q

Can be used to process chicken and red meat

A

Gamma rays

46
Q

It is for food processing

A

Gamma rays

47
Q

Gamma rays may kill what bacteria in chickens

A

Salmonella and campylobacter

48
Q

Three mechanical methods

A

Sonic vibration, trituration, agitation

49
Q

It is a mechanical method that uses sound waves

A

Sonic vibration

50
Q

It is a mechanical method that uses grinding

A

trituration

51
Q

It is a mechanical method that uses shaking

A

agitation

52
Q

This method that disintegrate bacteria

A

Mechanical methods

53
Q

It used to separate cells larger viruses bacteria and certain other microorganisms from the liquid or gases in which they are suspended

A

Filtration

54
Q

It is by plasmolysis

A

Osmotic pressure

55
Q

Immersion of meat in salt solution

A

Osmotic pressure

56
Q

Fruits and vegetables in sugar solution

A

osmosis pressure

57
Q

4 variables of diinfection

A

Concentration time temperature and pH

58
Q

Increased concentration and increased time equals

A

decreased survivor

59
Q

It refers to two water soluble chemical compounds

A

Alcohol: Ethel alcohol and isopropyl alcohol

60
Q

It is a chemical method that do not destroy bacterial spores

A

Alcohol

61
Q

Available as liquid or solid

A

Hypochlorite

62
Q

They have a broad spectrum of anti-microbial activity

A

Hypochlorite

63
Q

It is used as a disinfectant and stare lunch in both it’s liquid and gas was states

A

Formaldehyde

64
Q

Weight of formaldehyde

A

37%

65
Q

It is a water-based solution called

A

Formalin

66
Q

It is a high-level disinfectant and chemical sterilant

A

Glutaraldehyde I love

67
Q

Can we use both as anti-septic’s and disinfectant

A

iodophores

68
Q

It is a combination of iodine and a solubilizing agent or carrier

A

iodophores

69
Q

Other name of peracetic acid

A

Peroxyacetic acid

70
Q

It has a rapid action against all microorganism

A

peracetic acid

71
Q

It is the derivatives of Pheols

A

Phenolics

72
Q

What concentration if it acts as a gross protoplasmic poison

A

High concentration of phenolics

73
Q

What concentration in phenolics if inactivation of essential enzymes distance and leakage of Ascension metabolites from the cell wall

A

Low concentration

74
Q

It kills other bacteria except MTB

A

Malachite green

75
Q

Mala site green kills other bacteria except

A

MTB

76
Q

Is for sterilization of heat sensitive equipment

A

Etheline oxide

77
Q

It is the most affective cold a sterilization technique

A

Etheline oxide

78
Q

It is a surfactant interact with the lipid in the cell membrane and with surrounding water increases the surface tension

A

detergents or soaps

79
Q

Used for prophylaxis of conjunctivitis of the newborn topical therapy of for burns wounds and bonding to in Reading catheters

A

Silver

80
Q

Inactivation of bacteria on the stainless steel

A

Zeolite ceramic coatings with zinc and silver

81
Q

Used for environmental control, disinfection of water, or are use of all medical devices

A

Silver iron and copper

82
Q

fungicide against aspergillus

A

Copper eight quinolinolate

83
Q

for legionella disinfection

A

Copper silver ionization

84
Q

It is a high-level disinfectant

A

ortho-phthalaldehyde

85
Q

Solution is a clear pale blue liquid with a pH of 7.5

A

OPA

86
Q

OPA pH level

A

7.5

87
Q

It contains 0.55% of

A

1,2 benzenedicarboxaldehyde

88
Q

It is a dehydrating agent is less bactericidal than mixtures of alcohol and water

A

Absolute Ethel alcohol

89
Q

Formaldehyde limits the exposure of

A

Carcinogen

90
Q

Pro long exposure of formaldehyde can lead to

A

Contact dermatitis

91
Q

They are not is sporicidal

A

Acidic Glutaraldehyde

92
Q

Example of preservative or disinfectant

A

thimerosal

93
Q

Example of an anti-septic of organic mercurials

A

mercurochrome

94
Q

Example of detergent or soaps

A

Quaternary ammonium

95
Q

First germicide used by Mr. Lister

A

Phenolics

bacte (11 decks)

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