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Physical and Chemical Agents

Physical and Chemical Agents
The time required to kill 90% of the microorganisms in a sample at a specific temperature is the

F value
D value
thermal death point
decimal reduction time

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Physical and Chemical Agents
Which of the following items could be sterilized by dry heat sterilization?

Intravenous (IV) solution
rubber gloves
Plastic IV bags
Glass pipettes

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Physical and Chemical Agents
Which of the following material is sterilized by use of red heat?

Inoculating wires and loops
Soiled dressings
Glass slides
All-glass syringes

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Physical and Chemical Agents
The time in minutes at a specific temperature needed to kill a population of cells is the

decimal reduction time
thermal death temperature
F value
thermal death point

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Physical and Chemical Agents
The organisms retained in the fluids filtered by Seitz filter is

None of these
Clostridium
Staphylococcus
Proteus

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Physical and Chemical Agents
Sweet and salty foods frequently don't require refrigeration to prevent spoilage because they have

low pH
toxic alkaline chemicals
high concentration of solutes
insufficient nutrients

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