MCB Chapter 7 Review Flash Cards

 
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Bone and tendons for transplant are decontaminated by what? Supercritical fluids 0 brazilxobball Sun, 27 Feb 2011 02:55:37 GMT view revision history
If you were preparing nutrient agar at home and didn’t have an autoclave, what could you use to sterilize the nutrient agar? Pressure cooker at 121°C for 15 minutes 0 brazilxobball Sun, 27 Feb 2011 02:55:37 GMT view revision history
Know what can inactivate endospores. DO:
Autoclave
Supercritical CO2
Plasma
Chlorine dioxide

DOESN'T:
High pressure
0 brazilxobball Sun, 27 Feb 2011 02:55:37 GMT view revision history
Know what substances are used to preserve food and those that aren’t. DO:
Sodium nitrite
Nisin
Sodium propionate
Potassium sorbate
DOESN'T
Biguanides
0 brazilxobball Sun, 27 Feb 2011 02:53:35 GMT view revision history
What concentration of ethanol is the most effective bactericide? 70% 0 brazilxobball Sun, 27 Feb 2011 02:53:35 GMT view revision history
Describe glutaraldehyde. one of the most effective disinfectants for hospital use:

Attacks all microorganisms
Is not hampered by organic material
Is safe to transport
Acts rapidly
0 brazilxobball Sun, 27 Feb 2011 02:53:35 GMT view revision history
Know what substances are oxidizing agents and which are not. ARE:
Ozone
Chlorine
Iodine
Hydrogen peroxide

NOT:
Glutaraldehyde
0 brazilxobball Sun, 27 Feb 2011 02:53:35 GMT view revision history
Which disinfectants acts by denaturing proteins? alcohols 0 brazilxobball Sun, 27 Feb 2011 02:49:06 GMT view revision history
Know the limitation of the autoclave. Cannot be used with heat-labile materials 0 brazilxobball Sun, 27 Feb 2011 02:49:06 GMT view revision history
Know whether pasteurization achieves sterilization or not It does not achieve sterilization

DO:
Ethylene oxide
Formaldehyde
Dry heat
Autoclave
0 brazilxobball Sun, 27 Feb 2011 02:49:06 GMT view revision history
Describe the pattern and rate of microbial death. when treated w/ heat/chemicals they die at a constant rate

effectiveness depends on
Depends on
Number of microbes
Environment (organic matter, temperature, biofilms)
Time of exposure
Microbial characteristics
1 brazilxobball Mon, 28 Feb 2011 00:50:00 GMT view revision history

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