BIOD 171 PORTAGE LEARNING/MODULE 4 EXAM QUESTIONS AND ANSWERS LATEST UPDATE

BIOD 171 PORTAGE LEARNING/MODULE 4 EXAM QUESTIONS AND
ANSWERS LATEST UPDATE




Question 1

pts


True or False: Growth media is best suited for distinguishing
between two similar species of bacteria.




True




False




Growth media is designed to simply support (and not restrict)
microbial growth.




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, Question 2

pts




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




Correct!




Selective media

Selective media. If additional foreign microbes may be present in
your sample and you know Neisseria meningitides is slow growing,
you must restrict the unwanted microbes while supporting the
growth of Neisseria meningitides. Thus, you are selectively
encouraging one microbes growth, while selectively restricting
others.


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, Selective and Differential media




Differential media




Question 3

pts




What are the requirements of a fastidious microbe?




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 particular subset of
microorganisms.




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