BIOD 171: Module 4 - Practice Self Exam
Study online at https://quizlet.com/_c35c5h
True
True or False: Differential media is best
(Growth media does not contain restric-
suited for distinguishing between two
tive factors, while selective media is best
similar species of bacteria.
used to encourage the growth of one
microbe.)
False
True or False: Growth media is best suit-
(This is differential media)
ed for distinguishing between two similar
species of bacteria.
(Growth media is designed to simply sup-
port (and not restrict) microbial growth).
A researcher is asked to determine if a
sample contains Neisseria meningitides. B. Selective media
Knowing Neisseria meningitides is slow (If additional foreign microbes may be
growing and other foreign microbes may present in your sample and you know
also be present in the culture, which type Neisseria is slow growing, you must re-
of media would be best suited? strict the unwanted microbes while sup-
porting the growth of Neisseria meningi-
A. Growth Media tides. Thus, you are selectively encour-
B. Selective Media aging one microbe's growth, while selec-
C. Selective and Differential Media tively restricting others).
D. Differential Media
A researcher is asked to determine
which two vials contains E. coli and
which contains salmonella.
Knowing both are Gram Negative while
Differential media
only one of them is capable of fermenting
lactose, which type of media would be
(Differential media distinguishes be-
best suited?
tween two, often related, microbes).
A. Growth Media
B. Differential Media
C. Selective Media
D. Selective and Differential Meida
What are the requirements of fastidious
microbe? 1/7
, BIOD 171: Module 4 - Practice Self Exam
Study online at https://quizlet.com/_c35c5h
A fastidious microbe is an organism with
complex growth requirements such that
if absent it will not grow. Enriched medias
thus contain these specific and essential
nutrients required for the growth of a par-
ticular subset of microorganisms.
False
True or False: LB agar is classified as a
selective, non-differential media. (LB agar is non-selective and non-differ-
ential).
Agar is used to create a solid, smooth
What is agar used for in microbiology?
surface on which microbes can grow.
Blood agar is which type of medium? C and D: Enriched and differential.
(Select all that apply).
A. Selective (Blood agar can be used to differentiate
B. Selective and Differential between species based on its hemolyt-
C. Enriched ic activity. It is enriched with red blood
D. Differential cells).
Match the following hemolytic class with
its description of activity.
1) Alpha hemolysis: Incomplete hemolyt-
ic
1) Alpha hemolysis
2) Beta hemolysis
2) Beta hemolysis: Complete hemolytic
3) Gamma hemolysis
3) Gamma hemolysis: No hemolytic ac-
A) Incomplete hemolytic
tivity
B) Complete hemolytic
C) No hemolytic activity
Columbia CNA agar is most closely re-
lated to which media? Blood agar
A. Trypticase Soy Agar (CNA agar is similar to BAP as it is also
B. MacConkey Agar enriched with blood and allows for differ-
C. Blood agar entiation based on hemolytic patterns.)
D. EMB agar
True or False: Chocolate (cocoa) is not a
component of Chocolate agar plates.
Study online at https://quizlet.com/_c35c5h
True
True or False: Differential media is best
(Growth media does not contain restric-
suited for distinguishing between two
tive factors, while selective media is best
similar species of bacteria.
used to encourage the growth of one
microbe.)
False
True or False: Growth media is best suit-
(This is differential media)
ed for distinguishing between two similar
species of bacteria.
(Growth media is designed to simply sup-
port (and not restrict) microbial growth).
A researcher is asked to determine if a
sample contains Neisseria meningitides. B. Selective media
Knowing Neisseria meningitides is slow (If additional foreign microbes may be
growing and other foreign microbes may present in your sample and you know
also be present in the culture, which type Neisseria is slow growing, you must re-
of media would be best suited? strict the unwanted microbes while sup-
porting the growth of Neisseria meningi-
A. Growth Media tides. Thus, you are selectively encour-
B. Selective Media aging one microbe's growth, while selec-
C. Selective and Differential Media tively restricting others).
D. Differential Media
A researcher is asked to determine
which two vials contains E. coli and
which contains salmonella.
Knowing both are Gram Negative while
Differential media
only one of them is capable of fermenting
lactose, which type of media would be
(Differential media distinguishes be-
best suited?
tween two, often related, microbes).
A. Growth Media
B. Differential Media
C. Selective Media
D. Selective and Differential Meida
What are the requirements of fastidious
microbe? 1/7
, BIOD 171: Module 4 - Practice Self Exam
Study online at https://quizlet.com/_c35c5h
A fastidious microbe is an organism with
complex growth requirements such that
if absent it will not grow. Enriched medias
thus contain these specific and essential
nutrients required for the growth of a par-
ticular subset of microorganisms.
False
True or False: LB agar is classified as a
selective, non-differential media. (LB agar is non-selective and non-differ-
ential).
Agar is used to create a solid, smooth
What is agar used for in microbiology?
surface on which microbes can grow.
Blood agar is which type of medium? C and D: Enriched and differential.
(Select all that apply).
A. Selective (Blood agar can be used to differentiate
B. Selective and Differential between species based on its hemolyt-
C. Enriched ic activity. It is enriched with red blood
D. Differential cells).
Match the following hemolytic class with
its description of activity.
1) Alpha hemolysis: Incomplete hemolyt-
ic
1) Alpha hemolysis
2) Beta hemolysis
2) Beta hemolysis: Complete hemolytic
3) Gamma hemolysis
3) Gamma hemolysis: No hemolytic ac-
A) Incomplete hemolytic
tivity
B) Complete hemolytic
C) No hemolytic activity
Columbia CNA agar is most closely re-
lated to which media? Blood agar
A. Trypticase Soy Agar (CNA agar is similar to BAP as it is also
B. MacConkey Agar enriched with blood and allows for differ-
C. Blood agar entiation based on hemolytic patterns.)
D. EMB agar
True or False: Chocolate (cocoa) is not a
component of Chocolate agar plates.
