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