BIOD 171 ESSENTIAL MICROBIOLOGY MODULE 4 100
QUESTIONS AND ANSWERS 2026/2027 || VERIFIED
QUESTIONS & ACCURATE ANSWERS || GRADED A+
100 QUESTIONS AND ANSWERS
True or False: Differential media is best suited for distinguishing between two
similar species of bacteria. - CORRECT ANSWER - True: growth media does
not contain restrictive factors, while selective media is best used to encourage the
growth of one microbe.
True or False: Growth media is best suited for distinguishing between two similar
species of bacteria. - CORRECT ANSWER - False
A researcher is asked to determine if a sample contains Neisseria meningitides.
Knowing Neisseria meningitides is slow growing and other foreign microbes may
also be present in the culture, which type of media would be best suited?
Growth Media
Selective Media
Selective and Differential Media
Differential Media - CORRECT ANSWER - Selective Media-if additional
foreign microbes may be present in your sample and you know Neisseria is slow
growing you want to restrict unwanted microbes.
A researcher is asked to determine which two vials contains E coli and which
contains salmonella. Knowing both are Gram Negative while only one of them is
capable of fermenting lactose, which type of media would be best suited.
,Growth Media
Differential Media
Selective Media
Selective and Differential Meida - CORRECT ANSWER - Differential Media
What are the requirements of fastidious microbe? - CORRECT ANSWER -
Enriched media is used to grow fastidious microorganisms. Fastidious
microorganisms are organisms with complex growth requirements, and if absent
they will not grow. They contain essential nutrients that are required to grow
microorganisms.
True or False: LB agar is classified as a selective, non-differential media. -
CORRECT ANSWER - False, LB agar is the most basic type of agar
What is agar used for in microbiology? - CORRECT ANSWER - Its used to
create a solid and smooth surface so microbes can grow on
Blood agar is which type of medium? Select all that apply
Selective
Selective and Differential
Enriched
Differential - CORRECT ANSWER - Enriched and Differential
, Match the following hemolytic class with its description of activity.
1) Alpha hemolysis
2) Beta hemolysis
3) Gamma hemolysis - CORRECT ANSWER - 1)Incomplete hemolytic
2)Complete hemolytic
3) No hemolytic activity
Columbia CNA agar is most closely related to which media?
Trypticase Soy Agar
MacConkey Agar
Blood agar
EMB agar - CORRECT ANSWER - Blood agar
True or False: Chocolate (cocoa) is not a component of Chocolate agar plates. -
CORRECT ANSWER - True; the name is derived simply based on the color
that actually comes from the presence of cooked lysed.
True or False: Chocolate agar gets its brown color from cocoa to produce an
enriched media. - CORRECT ANSWER - False
QUESTIONS AND ANSWERS 2026/2027 || VERIFIED
QUESTIONS & ACCURATE ANSWERS || GRADED A+
100 QUESTIONS AND ANSWERS
True or False: Differential media is best suited for distinguishing between two
similar species of bacteria. - CORRECT ANSWER - True: growth media does
not contain restrictive factors, while selective media is best used to encourage the
growth of one microbe.
True or False: Growth media is best suited for distinguishing between two similar
species of bacteria. - CORRECT ANSWER - False
A researcher is asked to determine if a sample contains Neisseria meningitides.
Knowing Neisseria meningitides is slow growing and other foreign microbes may
also be present in the culture, which type of media would be best suited?
Growth Media
Selective Media
Selective and Differential Media
Differential Media - CORRECT ANSWER - Selective Media-if additional
foreign microbes may be present in your sample and you know Neisseria is slow
growing you want to restrict unwanted microbes.
A researcher is asked to determine which two vials contains E coli and which
contains salmonella. Knowing both are Gram Negative while only one of them is
capable of fermenting lactose, which type of media would be best suited.
,Growth Media
Differential Media
Selective Media
Selective and Differential Meida - CORRECT ANSWER - Differential Media
What are the requirements of fastidious microbe? - CORRECT ANSWER -
Enriched media is used to grow fastidious microorganisms. Fastidious
microorganisms are organisms with complex growth requirements, and if absent
they will not grow. They contain essential nutrients that are required to grow
microorganisms.
True or False: LB agar is classified as a selective, non-differential media. -
CORRECT ANSWER - False, LB agar is the most basic type of agar
What is agar used for in microbiology? - CORRECT ANSWER - Its used to
create a solid and smooth surface so microbes can grow on
Blood agar is which type of medium? Select all that apply
Selective
Selective and Differential
Enriched
Differential - CORRECT ANSWER - Enriched and Differential
, Match the following hemolytic class with its description of activity.
1) Alpha hemolysis
2) Beta hemolysis
3) Gamma hemolysis - CORRECT ANSWER - 1)Incomplete hemolytic
2)Complete hemolytic
3) No hemolytic activity
Columbia CNA agar is most closely related to which media?
Trypticase Soy Agar
MacConkey Agar
Blood agar
EMB agar - CORRECT ANSWER - Blood agar
True or False: Chocolate (cocoa) is not a component of Chocolate agar plates. -
CORRECT ANSWER - True; the name is derived simply based on the color
that actually comes from the presence of cooked lysed.
True or False: Chocolate agar gets its brown color from cocoa to produce an
enriched media. - CORRECT ANSWER - False
