Exam 4 Portage Microbiology
False. Growth media is designed to simply support (and not restrict) microbial growth
True or False: Growth media is best suited for distinguishing between two similar species of bacteria
Differential media distinguishes between two, often related, microbes
A researcher is asked to determine which of two vials contains e coli and which contains salmonella.
Knowing both gram-negative while only one of them is capable of fermenting lactose, which type of
media would be best suited (multiple choice)
Selective media
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? (multiple choice)
A fastidious microbe is an organism with complex growth requirements such that is absent it will not
grow. Enriched medias thus contain these specific and essential nutrients required for the growth of a
particular subset of microorganisms.
What are the requirements of a fastidious microbe? (short answer)
False
True or False: LB agar is classified as a selective, non-differential media
, Agar is used to create a solid, smooth surface on which microbes can grow
What is agar used for in microbiology? (short answer)
Incomplete hemolytic activity
Alpha hemolysis (matching)
Complete hemolytic activity
Beta hemolysis (matching)
no hemolytic activity
Gamma hemolysis (matching)
blood agar
Columbia CNA agar is most closely related to which media (multiple choice)
false
False. Growth media is designed to simply support (and not restrict) microbial growth
True or False: Growth media is best suited for distinguishing between two similar species of bacteria
Differential media distinguishes between two, often related, microbes
A researcher is asked to determine which of two vials contains e coli and which contains salmonella.
Knowing both gram-negative while only one of them is capable of fermenting lactose, which type of
media would be best suited (multiple choice)
Selective media
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? (multiple choice)
A fastidious microbe is an organism with complex growth requirements such that is absent it will not
grow. Enriched medias thus contain these specific and essential nutrients required for the growth of a
particular subset of microorganisms.
What are the requirements of a fastidious microbe? (short answer)
False
True or False: LB agar is classified as a selective, non-differential media
, Agar is used to create a solid, smooth surface on which microbes can grow
What is agar used for in microbiology? (short answer)
Incomplete hemolytic activity
Alpha hemolysis (matching)
Complete hemolytic activity
Beta hemolysis (matching)
no hemolytic activity
Gamma hemolysis (matching)
blood agar
Columbia CNA agar is most closely related to which media (multiple choice)
false
