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suv
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08/11/06 - 11:53 AM             #1

a new lab technologist receives an orientation on her first day of hospital employment .she is instructed on accepted procedures for biohazardous waste disposal.all reusable glassware is subjected to 20 min at 121 C at 15 pound pressure.which of the following would retain pathogenecity following this treatment?
A. bacterial forms containing dipicoloinic acid
B.botulinum toxin
C.endotoxin
D.Mycobacterium tuberculosis
E.Norwalk virus

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study_ing
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08/11/06 - 12:48 PM             #2

cud be a which describes spores

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suv
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08/11/06 - 01:07 PM             #3

try again


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Ivil
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08/11/06 - 01:32 PM             #4

Ans is A. Dipicolinic acid is responsible of resistance to wet heat in spores.

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suv
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08/11/06 - 01:43 PM             #5

sorry try again

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Ivil
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08/11/06 - 02:02 PM             #6

is it endotoxin. when the bacteria is destroyed, the cell wall disintegrate releasing endotoxin. im not sure whether endotoxin is inactivated by heat...
????????????

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suv
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08/11/06 - 02:11 PM             #7

yes u got it now!
the method described is AUTOCLAVING
Endotoxin is a molecule that is extremely heat resistant and is not killled by autoclaving while all the others listed are killed!


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Ivil
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08/11/06 - 02:17 PM             #8

good question suv...
autoclave resistant organisms...
1. Bacillus stereothermophillus. it is used to check the effective autoclaving.
2. Prions... extremely resistant..

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suv
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08/11/06 - 02:22 PM             #9

nod

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