PORTAGE LEARNING BIOD171 MODULE 4 EXAM*** QUESTIONS AND
ANSWERS WITH COMPLETE SOLUTIONS VERIFIED GRADED A+
True or False: Growth Media is best suited for distinguishing between two similar
species of bacteria.
FALSE. Growth media is designed to simply support (and not restrict) microbial growth
A researcher is asked to determine which of two vitals contains E.coli and which
contains Salmonella. Knowing both are gram-negative while only one of them is:
A. Growth Media
B. Differential Media
C. Selective Media
D. Selective and Differential media
Differential Media (distinguishes between two or more microbes that are related)
What re the requirements of a fastidious microbe?
Enriched medias that contain specific and essential nutrients that are required for
growth
True or False: LB agar is classified as a selective, non-differential media.
FALSE.
What is agar used for in microbiology?
To create a solid, smooth surface on which microbes can grow
Match the following hemolytic class with its description
A. No hemolytic activity
B. Incomplete hemolytic activity
C. Complete hemolytic activity
Alpha: Incomplete hemolytic activity
Beta: Complete hemolytic activity
Gamma: No hemolytic activity
Columbia CNA agar is most closely related to which media:
A. TSA/TYSAE Agar
B. MacConkey Agar
ANSWERS WITH COMPLETE SOLUTIONS VERIFIED GRADED A+
True or False: Growth Media is best suited for distinguishing between two similar
species of bacteria.
FALSE. Growth media is designed to simply support (and not restrict) microbial growth
A researcher is asked to determine which of two vitals contains E.coli and which
contains Salmonella. Knowing both are gram-negative while only one of them is:
A. Growth Media
B. Differential Media
C. Selective Media
D. Selective and Differential media
Differential Media (distinguishes between two or more microbes that are related)
What re the requirements of a fastidious microbe?
Enriched medias that contain specific and essential nutrients that are required for
growth
True or False: LB agar is classified as a selective, non-differential media.
FALSE.
What is agar used for in microbiology?
To create a solid, smooth surface on which microbes can grow
Match the following hemolytic class with its description
A. No hemolytic activity
B. Incomplete hemolytic activity
C. Complete hemolytic activity
Alpha: Incomplete hemolytic activity
Beta: Complete hemolytic activity
Gamma: No hemolytic activity
Columbia CNA agar is most closely related to which media:
A. TSA/TYSAE Agar
B. MacConkey Agar
