Micro CH 11
The kilogray is equal to ___ (write the number) grays.
1000
___ are organic substances that contain a -CHO functional group on a terminal carbon.
Aldehydes
A sterile object is free of which of the following?
All viable microorganisms and viruses
Which typically describes cold temperatures?
Bacteriostatic
Microbial control methods are referred to as ____ procedures.
Decontamination
Which of the following is the mechanical removal of most microbes from animate or inanimate surface?
Decontamination
What is the process of straining a fluid or air through a membrane to trap microorganisms?
Filtration
The primary targets of microbial control are microorganisms that cause which of the following?
Food spoilage Disease
Which is the most prominent among antimicrobial physical agents?
Heat
Which level germicides can function as sterilants?
High
Which of the following is the practical definition of microbial death?
Inability to reproduce
Which of the following materials require high-level germicides?
Invasive medical devices
Which of the following is a microorganism that can survive at low temperatures?
Psychrotroph
___ used for microbial control includes electromagnetic waves with shorter wavelengths.
Radiation
____used for microbial control includes electromagnetic waves with shorter wavelengths.
Radiation
Which of the following are examples of physical agents or mechanical means used to control microbes?
Radiation Heat Filtration
The inability to _____ even under optimal growth conditions is the practical definition of microbial death.
Reproduce
Which of the following describes the main function of the cell membrane?
Selective barrier
Chemical agents that can destroy all forms of life, including endospores, are called which of the following?
Sterilants
Which of the following can be high-level germicides?
Sterilants
What process completely removes or destroys all viable microorganisms, including viruses, from an object or habitat?
Sterilization
___ radiation is most lethal from 240nm to 280nm.
Ultraviolet
All of the following describe the typical microbial population targeted by antimicrobial drugs except which of the following?
Uniform populations of like microbes
_____is the general term used for the reduction of the microbial load in order to lower the possibility of infection or spoilage.
decontamination
Radiation is characterized by a range of wavelengths known as the ___
electromagnetic, spectrum
Radiation is characterized by a range of wavelengths known as the_____ ______
electromagnetic, spectrum
The straining of a fluid or air through a membrane to trap microorganisms is known as ___
filtration
The bombarding of a substance by waves or particles for diagnosis, therapy, disinfection, or sterilization is referred to as .
irradiation
Antimicrobial chemicals can exist in what physical states?
liquid, solid, gas
The cell ___ is responsible for preventing the loss of important molecules and stopping the entry of damaging substances. Listen to the complete question
membrane
Regarding the use of the terms microbicidal and microbistatic, higher temperatures are usually______ , whereas lower temperatures are usually _____.
microbicidal, microbistatic
Regarding the use of the terms microbicidal and microbistatic, higher temperatures are usually ____ , whereas lower temperatures are usually ___.
microbicidal; microbistatic
The inability to ____ even under optimal growth conditions is the practical definition of microbial death.
reproduce
In a solution, solutes are dissolved in a liquid known as the .
solvent
Aldehydes are organic substances that contain a -CHO functional group on a ___ carbon.
terminal
____ radiation is non-ionizing radiation that readily induces mutations.
ultraviolet
____ is the process of bombardment with radiation at the cellular level to control microbes.
Irradiation
When microbes are treated with temperatures that exceed their maximum growth temperature, the condition is described as which of the following?
Microbicidal
In what unit is the radiation measured in air expressed? 1. Gray 2. Roentgen 3. Coulomb (C)/kilogram
grays/kilograys
In dilutions, a small amount of the ____ is diluted in a large volume of solvent to achieve a certain ratio. Listen to the complete question
solute