Exam 13: Sterilization and Disinfection

High concentrations of solutes such as sugar or salt results in plasmolysis of cells due to the onset of which phenomenon.

Foods should not be refrozen because

The use of phenol as a standard with which to compare the effectiveness of other chemical disinfectants is referred to as the _____.

What is a chemical agent that can safely be used externally on living tissue to destroy microorganisms or to inhibit their growth

Which is not used when trying to ensure that autoclaving has achieved sterility

Disinfection is the _____.

Membrane filters are used for sterilization because _____.

When an antimicrobial agent permanently denatures proteins thus preventing renaturation to their native states it is considered:

Soluble compounds that reduce surface tension thus dissolving lipids are known as:

All of the following pertain to the effectiveness of a chemical antimicrobial agent EXCEPT:

Agents that adversely affect cell wall formation include:

Agents that denature proteins include all of the following except:

An agent capable of killing microbes rapidly,perhaps killing certain microorganisms but only inhibiting the growth of others is called a/an:

Surfactants include all of the following except:

A viricide is an agent that _____.

Moist heat kills microorganisms by denaturing their _____.

Which of the following statements about heat is true

All of the following are examples of heavy metals used as antimicrobial agents EXCEPT:

Which of the following chemical antimicrobial agents is matched correctly with its mechanism

Which is a cationic detergent having four organic groups attached to a nitrogen atom and used to sanitize utensils