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Microbiology > Chapter 9 Worksheets > Flashcards

Chapter 9 Worksheets Flashcards

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Biology 101 flashcards
1
Q

Gamma rays, X-rays, and electron bean

A

Ionizing radiation

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2
Q

Non-penetrating radiation

A

Non-ionizing radiation

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3
Q

Can be used to separate mixtures of
microorganism

A

Filtration

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4
Q

Moist heat techniques that do not lead to sterilization

A

Pasteurization, Boiling

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5
Q

Type of radiation that is effective in
sterilizing transparent fluids and gases

A

Non-ionizing radiation

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6
Q

Ignites microbes to ashes and gas

A

Dry Heat

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7
Q

Leads the formation of pyrimidine
dimers (thyme dimers)

A

Non-ionizing radiation

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8
Q

Dislodges electrons from atoms

A

Ionizing radiation

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9
Q

Bacterial DNA repair mechanisms
counter acts this type of radiation

A

Non-ionizing radiation

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10
Q

Uses mild heat to reduced microbial
populations in heat sensitive food

A

Pasteurization

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11
Q

Can be used to sterilize air and heat
sensitive fluids (vaccines, antibiotics, liquid
vitamins, enzymes, and culture media)

A

Filtration

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12
Q

Hypertonic solutions cause
dehydration of microbial cells

A

Osmotic Pressure

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13
Q

Examples include flame of Bunsen
Burner, ovens, and incinerators

A

Dry Heat

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14
Q

Ultraviolet Light Rays

A

Non-ionizing radiation

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15
Q

Moist heat techniques that allow
destruction of all organisms

A

Ultra-High-Temperature Sterilization, Autoclaving

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16
Q

Lead to decreased microbial
metabolism, growth, and reproduction

A

Refrigeration, Freezing, Lyophilization, Osmotic Pressure

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17
Q

Compare to dry heat this type of
heat is more effective

A

Moist Heat

18
Q

Denatures proteins and destroy
membranes

A

Pasteurization, Autoclaving, Boiling, Ultra-High-Temperature Sterilization, Hot Air, Moist Heat

19
Q

Destroy DNA

A

Ionizing radiation

20
Q

Used for long storage of bacterial
cultures

A

Freezing, Lyophilization

21
Q

Sterilization of dairy products

A

Ultra-High-Temperature Sterilization

22
Q

Sterilization of powders, oils and
metals

A

Hot Air

23
Q

Common household H2O2 disinfectant and sterilizing agent used on surfaces of inanimate objects such as a contact lenses.

A

Oxidizing Agents, Hydrogen peroxide

24
Q

Used to sterilized instruments and
equipment sensitive to heat.

A

Ethylene Oxide

25
Q

This chemical does not make a good
antiseptic for open wounds because
damaged human cells release catalase,
which neutralizes it.

A

Hydrogen peroxide

26
Q

This chemical evaporates much more
slowly than chloride at high temperatures

A

Halogen- Bromine

27
Q

Is a halogen that serves as an
effective disinfectant in hot tubs, cooling

A

Halogen- Bromine

28
Q

Example include soaps and
detergents.

A

Surfactants

29
Q

Natural oils, such as pine and clove
oils used as antiseptics

A

Phenol

30
Q

This chemical is capable of
sterilization after long periods of exposure.

A

Aldehyde- Glutaraldehyde

31
Q

This chemical is a bactericidal
fungicidal and virucidal against enveloped
viruses but does not achieved sterilization.

A

Alcohol

32
Q

This chemical is an antiseptic used to
prepare skin for surgery and injections and
to treat burns.

A

Halogen- Iodophor- Betadine

33
Q

Alone or as tinctures, 70% solutions
better protein coagulation than 100%

A

Alcohol

34
Q

This product is incorporated into
numerous products like, garbage bags,
diapers, and cutting boards.

A

Bisphenolics- Triclosan

35
Q

This chemical reduces the surfaces
tension of solvents such as water by
decreasing the attraction among molecules.

A

Surfactants

36
Q

Antibacterial agent used in drinking
water and toothpastes.

A

Halogen- Fluorine

37
Q

Examples such peracetic acid to
sterilize invasive equipment, Ozone used
with chlorination.

A

Oxidizing Agents

38
Q

General disinfectant e.g. carbolic
acid, Lysol.

A

Phenol

39
Q

NASA used this chemical agent to
sterilize spacecraft.

A

Ethylene Oxide

40
Q

Copper, zinc, or mercury are used to
control mildew in some paint.

A

Heavy metals

41
Q

Used as a preservative for organs,
tissues, biopsy, specimens.

A

Aldehyde- Formalin

Microbiology (23 decks)

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