Portage Learning BIOL 110 microbiology EXAM A+ GRADE ASSURED COMPLETE SOLUTIONS AND VERIFIED ANSWERS

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Exam Solution zm




Portage Learning Micro exam 4 2026 A+ GRADE ASSUR zm zm zm zm zm zm zm zm




ED COMPLETE SOLUTIONS AND VERIFIED ANSWERS (0
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F329)




QUESTION 1 zm




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

True: growth media does not contain restrictive factors, while selective media is best used to encour
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age the growth of one microbe.
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QUESTION 2 zm




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




ANSWER

False



QUESTION 3 zm




A researcher is asked to determine if a sample contains Neisseria meningitides. Knowi
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ng Neisseria meningitides is slow growing and other foreign microbes may also be pr
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esent in the culture, which type of media would be best suited? Growth Media Selectiv
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e Media Selective and Differential Media Differential Media
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ANSWER

Selective Media- zm



if additional foreign microbes may be present in your sample and you know Neisseria is slow growi
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ng you want to restrict unwanted microbes.
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, QUESTION 4 zm




A researcher is asked to determine which two vials contains E coli and which contains
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salmonella. Knowing both are Gram Negative while only one of them is capable of fer
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menting lactose, which type of media would be best suited. Growth Media Differential
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Media Selective Media Selective and Differential Meida
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ANSWER

Differential Media zm




QUESTION 5 zm




What are the requirements of fastidious microbe?
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ANSWER

A fastidious microbe is an organisms with complex growth requirements such that if absent it will n
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ot grown. Enriched medias thus contain these specific and essential nutrients required for the growt
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h of a particular subset of microorganisms
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QUESTION 6 zm




True or False: LB agar is classified as a selective, non-differential media.
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ANSWER

False, LB agar is the most basic type of agar and like LB media supports the growth of virtually all
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microbes without restriction zm zm




QUESTION 7 zm




What is agar used for in microbiology?
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ANSWER

Its used to create a solid and smooth surface on which microbes can grow
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QUESTION 8 zm




Blood agar is which type of medium? Select all that apply Selective Selective and Diffe
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rential Enriched Differential zm zm




ANSWER

Enriched and Differential zm zm




QUESTION 9 zm