Embalming Micro. (FSE-120-0901): MOD 3

Which organism is the MOST flexible and adaptable when it comes to finding food sources on which to survive? A: Facultative organisms B: Saprophytic organisms C: Strict parasitic organisms D: Strictly obligate organisms

A: Facultative organisms

Regarding temperature, which of the following is the maximum time it takes to kill all microorganisms present? A: None of them. B: Thermal Death Point C: Thermal Death Time D: Decimal Reduction Time

C: Thermal Death Time

In which symbiotic relationship would one organism benefit while the other organism not be harmed?

Commensalism

It is generally safe to handle remains that were once considered to be infectious biohazard concerns after those remains have been?

Cremated

What chemical is used to produce Lysol?

Cresols

What bacteria type produces 20% of the Earth's oxygen (O2)?

Cyanobacteria

The physical method of controlling microbes that denatures proteins is?

Dry Heat

When you take a cold shower on a hot and humid day, you are creating conditions that will INCREASE the amount of bacteria and dust mites on your skin. True or False?

False

Which item is NOT a level or way of controlling microbial growth? A: Incineration B: Sterilization C: Disinfection D: Antisepsis

Incineration

A red blood cell will remain the same (neither shrink nor swell) in which type of solution?

Isotonic

Why is tincture of iodine not considered a sterilant?

It does not control microbial growth

What genus of bacteria is commonly associated with secondary infections in burn patients?

Pseudomonas

What kind of light controls microbial growth?

UV

The physical method of controlling microbes that damages the cell's DNA is?

UV light

A retort is?

a combustion chamber

A chemical method of controlling microbes that denatures proteins and dissolves lipids in the cell membrane is?

alcohol

When one bacterium inhibits the growth of another, that is known as __________?

antagonism

Inhibiting microbial growth on living tissue is?

antisepsis

Organisms that make their own food through photosynthesis are?

autotrophs

What is used to treat municipal drinking water and swimming pools?

chlorine

In a microbial association, when one bacterium benefits and the other is unaffected, that is known as ___________?

commensalism

Destroying pathogenic agents by disinfecting inanimate objects is?

disinfection

Bacteria that can adapt to different sources of nutrition are ____________ bacteria?

facultative

An agent that kills mold would be?

fungicide

Organisms that cannot make their own food and require food from a carbon source are?

heterotrophs

A bacterium in a ___________ would shrivel.

hypertonic

A bacterium in a ______________ solution would swell and might burst?

hypotonic

The best method to treat hazardous waste is?

incineration

A disinfectant that is a tincture is?

iodine

A disinfectant that oxidizes certain molecules within the microbial cell is?

iodine

A compound of iodine and surfactant is?

iodophore

How does higher temperature affect the effectiveness of chemical agents?

it usually increases effectiveness

An agent that kills mosquito larvae is?

larvicide

Bacteria that prefer human body temperatures are?

mesophiles

When both species of bacteria benefit in an association, that is known as __________?

mutualism

Bacteria that MUST have oxygen are?

obligate aerobes

Bacteria that must NOT be in the presence of oxygen are?

obligate anaerobes

Bacteria that would be utilizing tissue of human remains as a nutrition source would be _____________ bacteria?

obligate saprophyte

A chemical method of controlling microbes that has a sickeningly sweet and tarry odor is?

phenol

Bacteria that might prefer the temperature of remains in a refrigeration unit are?

psychrophiles

An agent that kills endospores is?

sporicide

Completely removing or destroying all life-forms, endospores, or their products is?

sterilization

What alters the surface tension of the cell membrane, causing the cell contents to leak out and kill the cell?

surfactants

The lowest temperature at which all microbes are killed in 10 minutes is?

thermal death point

An agent that kills viruses is?

viricide

An acid would be numbers ____ to ____ on the pH scale.

0;6

Under what conditions must an autoclave work to sterilize?

15 psi at 121oC for 10 minutes

How much of the Earth's oxygen do autotrophic bacteria produce?

20%

A substance is neutral if its pH level is?

7

A base would be numbers ____ to ____ on the pH scale?

8;14