Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Microbiology > Microbial Control > Flashcards

Microbial Control Flashcards

You may prefer our related Brainscape-certified flashcards:
Biology 101 flashcards
1
Q

All seven physical types of microbial control

A
  • Heat
  • Freezing/fridge
  • Desiccation
  • Filtration
  • HEPA (High Efficiency Particulate Air)
  • Osmotic
  • Radiation
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Types of heat related methods

A
  • moist heat

- dry heat

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Types of moist heat related methods

A
  • boiling
  • autoclaving (121 degrees C, 15 psi, 15 min)
  • pasteurization
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Pasteurization types

A

Batch: 30 min, 63 degrees
Flash: 15s, 72 degrees
Ultra-High temp pasteurization: 1s, 134 degrees
Ultra-high temp sterilization: 1s, 140 degrees

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Radiation types

A

Ionizing—wavelength shorter than 1nm
—ejects e- forming OH- ions to destroy molecules (nucleic acids)
•electron beams-effectively kill, but take a while to penetrate
•gamma rays-effective at penetrating, take a while to kill
Non-ionizing—wavelength greater than 1nm
—excites e-, causing new covalent bond formation, affecting structure of proteins and nucleic acids
•UV light doesn’t penetrate well—useful for penetrating air, transparent fluids, surfaces
•260nm is most germicidal wavelength

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Types of dry heat-related methods

A
  • Hot air—2h at 160 degrees C or 1h at 170 C

- incineration—1s at more than 1000 C

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

All 10 chemical methods of microbial control

A
  • Phenol/phenolics
  • Alcohols
  • Halogens
  • Oxidizing Agents
  • Surfactants
  • Heavy Metals
  • Aldehydes
  • Gaseous Agents
  • Enzymes
  • Antimicrobials
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Phenol/Phenolics

A
  • Denatures Proteins and disrupts cell membranes

- Carbolic Acid, Triclosan, Lysol, Hexachlorophene

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Alcohols

A
  • Denatures proteins and disrupt cell membranes

- Isopropanol, Ethanol

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Halogens

A
  • Presumably denatures proteins

- iodine, bromine, chlorine (bleach, sodium hypochlorite, calcium, hypochlorite), fluorine

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Oxidizing Agents

A
  • denatures proteins through oxidization

- Peroxide’s, ozone, peracetic acid

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Surfactants (Surface Active)

A
  • breaks down surface tension and disrupts cell membrane

- Soaps, Detergents, Quats ((Quaternary Ammonium Compounds) Benzalkonium Chloride, Cetylpyridinium Chloride)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Heavy Metals

A
  • Dentures proteins

- Arsenic, Zinc, Mercury, Silver, Copper, dental amalgam, silver nitrate

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Aldehydes

A
  • Denatures proteins

- glutaraldehyde, formaldehyde, formalin

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Gaseous Agents

A
  • Denatures proteins

- Ethylene Oxide, Propylene Oxide, beta-propiolactone

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Enzymes

A
  • Denature proteins

- lysozyme

Microbiology (4 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions