Microbiology Chapter 3 Test Questions with
Verified Answers
Which one of the following is not part of the five basic techniques used to grow, examine,
and manipulate microorganisms in a laboratory?
>Inoculation
> Infection
> Inspection
>Isolation - Ans -Infection
_________ of a sterile nutrient medium is the first "I" step of culturing microorganism? -
Ans -Inoculation
Which of the following identifies the step in the five I's of culturing microorganisms during
which a culture if grown in a controlled environment to encourage growth? - Ans -
Incubation
__________ is one of the five I's involved I culturing microorganisms and involves
determining the type of microbes usually to the species level? - Ans -identification
Which of the following represents inoculation of a microbial sample?
> Placing a sample in sterile medium
> streaking a sample on an agar plate
> Injecting sample into a bird embryo - Ans -All of these
A sterile medium is characterized by:
>complete absence of nutrients
1
Page
> complete absence of viable microbes
, > the lack of growing microbes - Ans -complete absence of viable microbes
A microbial _______ is defined as the accumulation of microorganisms in or on a nutrient
medium , it is observed as turbidity in a broth or colonies on solid media? - Ans -
Culture
________ is placing a culture in a temperature controlled chamber to encourage
multiplication? - Ans -Incubation
What unit of measurement represents the size of typical bacteria?
> Millimeter
> Micrometer
> Centimeter
> Nanometer - Ans -Micrometer
Which of the following represent the correct order of microorganisms from smallest to
largest?
> Protists, bacteria, viruses
> Viruses, bacteria , Protists
> Viruses, Protists, bacteria
> Bacteria , viruses, Protists - Ans -Viruses, bacteria, Protists
What unit of measurement represents the size of typical viruses?
> Millimeter
> Nanometer
> Micrometer
2
Page
> Centimeter - Ans -Nanometer
Verified Answers
Which one of the following is not part of the five basic techniques used to grow, examine,
and manipulate microorganisms in a laboratory?
>Inoculation
> Infection
> Inspection
>Isolation - Ans -Infection
_________ of a sterile nutrient medium is the first "I" step of culturing microorganism? -
Ans -Inoculation
Which of the following identifies the step in the five I's of culturing microorganisms during
which a culture if grown in a controlled environment to encourage growth? - Ans -
Incubation
__________ is one of the five I's involved I culturing microorganisms and involves
determining the type of microbes usually to the species level? - Ans -identification
Which of the following represents inoculation of a microbial sample?
> Placing a sample in sterile medium
> streaking a sample on an agar plate
> Injecting sample into a bird embryo - Ans -All of these
A sterile medium is characterized by:
>complete absence of nutrients
1
Page
> complete absence of viable microbes
, > the lack of growing microbes - Ans -complete absence of viable microbes
A microbial _______ is defined as the accumulation of microorganisms in or on a nutrient
medium , it is observed as turbidity in a broth or colonies on solid media? - Ans -
Culture
________ is placing a culture in a temperature controlled chamber to encourage
multiplication? - Ans -Incubation
What unit of measurement represents the size of typical bacteria?
> Millimeter
> Micrometer
> Centimeter
> Nanometer - Ans -Micrometer
Which of the following represent the correct order of microorganisms from smallest to
largest?
> Protists, bacteria, viruses
> Viruses, bacteria , Protists
> Viruses, Protists, bacteria
> Bacteria , viruses, Protists - Ans -Viruses, bacteria, Protists
What unit of measurement represents the size of typical viruses?
> Millimeter
> Nanometer
> Micrometer
2
Page
> Centimeter - Ans -Nanometer
