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Microbiology 2061 Quiz 4 with complete verified solutions
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Microbiology 2061 Quiz 4 with complete verified solutions
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Microbiology 2061Quiz 4 with complete
verified solutions
Starch positive result - answer halo made
starch negative result - answer halo not made
In an EMB test, if bacteria grows it is - answer
gram negative
In an EMB test, if bacteria does not grow, it is -
answer gram positive
In an EMB test, if the bacteria is gram negative,
what does a green metallic streak indicate? -
answer It is a coliform (from the gut) bacteria (i.e.
e.coli that ferments lactose)
In an EMB test, if the bacteria is gram negative,
what does a pink streak indicate? - answer
possible coliform and ferments lactose with
minimal acid made
, In an EMB test, if the bacteria is gram negative,
what does a colorless streak indicate? - answer
probable lactose or sucrose fermenter and
probable coliform
In an EMB test, if the bacteria is gram negative,
what does a dark streak indicate? - answer does
not ferment lactose
In an MSA test, if bacteria grows, it is - answer
gram positive
In an MSA test, if it is gram positive and has good
growth with no color change, it is - answer not
inhibited by salt
In an MSA test, if it is a gram positive and has a
yellow growth or halo?, it is - answer a mannitol
fermenter, salt resistant
In an MSA test, if it is a gram positive and has a
red growth and no halo, it is a - answer possible
staphylococcus or non-mannitol fermenter
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