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SIM
Micro lab exam
9
Biology
Undergraduate 3
10/13/2011

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Cards

Term
What bacteria showed a negative reaction in sulfide test?
Definition

E. coli

no change in color

Term
What bacteria showed a postive reaction in the indole test?
Definition

E. coli

red ring at the surface of the tube

Term
which bacteria showed a negative reaction to the indole test?
Definition

S. typhimurium 

no color change

Term
what bacteria had a postive reaction to the motility test?
Definition

E.coli and S. typhimurium

growth throughout the medium

Term
what bacteria showed a negative reaction to motility?
Definition
P. aeroginosa
Term
What is the basis of the sulfide test?
Definition
to observe organisms that metabolize sulfur-containing a.a. to form H2S gas
Term
what is the basis of indole test?
Definition
to observe metabollic of tryptophan to produce indole
Term
what is the basis of motility test?
Definition
to check for motility
Term
what reagent is used for indole test?
Definition
kovac's reagent
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