BIOD 171 EXAM 4 WITH 100% CORRECT ANSWERS 2026

BIOD 171 EXAM 4 WITH 100% CORRECT
ANSWERS 2026


true or false; growth media is best suited for distinguishing between two similar
y, y, y, y, y, y, y, y, y, y, y, y,


species of bacteria correct answer false
y, y, y, y, y, y, y, y, y, y,




growth media is designed to support and not restrict microbial growth
y, y, y, y, y, y, y, y, y, y,




true or false; differential media us best suited for distinguishing between two
y, y, y, y, y, y, y, y, y, y, y,


similar species of bacteria correct answer true
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A researcher is asked to determine if a sample contains Neisseria meningitides.
y, y, y, y, y, y, y, y, y, y, y,


Knowing Neisseria meningitides is slow growing and other foreign microbes
y, y, y, y, y, y, y, y, y, y,


may also be present in the culture, which type of media would be best suited?
y, y, y, y, y, y, y, y, y, y, y, y, y, y, y,




a. growth media
y, y,




b. selective media
y, y, y,




c. selective and differential media
y, y, y, y, y,




d. differential media correct answer B
y, y, y, y, y, y, y, y,




a researcher is asked to determine which of two vitals contain E. coli and which
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contains Salmonella. knowing both are gram-negative, while only one of them
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is capable of fermenting lactose, which type of media would best be suited
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a. selective and differential
y, y, y, y,




b. selective
y, y,

, c. growth media
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d. differential correct answer D
y, y, y, y, y, y, y,




what are the requirements for a fastidious microbe correct answer an
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organism with complex growth requirements that will not grow if absent
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enriched media must contain these specific nutrients
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true or false; LB agar is classified as a non-selective, non-differential media
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correct answer true
y, y, y, y,




the polysaccharide-based hardening agent added to LB media to produce LB
y, y, y, y, y, y, y, y, y, y,


agar is derived from what correct answer seaweed extract
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blood agar is which type of medium? select all that apply.
y, y, y, y, y, y, y, y, y, y,




a. differential
y, y,




b. selective
y, y,




c. enriched
y, y,




d. selective and differential correct answer A and C
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match the following hemolytic class with its description of activity
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1. alpha hemolysis
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2. beta hemolysis
y, y, y,




3. gamma hemolysis
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