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TSI
Micro lab exam
8
Biology
Undergraduate 3
10/13/2011

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Cards

Term

TSI 

triple sugar iron

Definition
  • used to ID enterobacters
  • pH indicator is phenol red 
Term
what are the three sugars that TSI contain?
Definition
glucose/dextrose, sucrose, and lactose
Term
What bacteria is a postive reaction in TSI?
Definition

E. coli 

 

lactose and or sucrose as well as glucose fermenter 

Yellow slant and butt 

Term
which bacteria is a glucose fermenter but not lactose or sucrose in TSI?
Definition

S. typhimurium 

 

red slant and yellow butt

Term
what bacteria ferment in the absence of carbohydrate in TSI?
Definition

P. aeruginosa 

 

red butt and slant

Term
what bacteria produces H2S in TSI?
Definition
S. typhimurium 
Term
What bacteria will produce gas in TSI?
Definition
S. typhimurium and E. coli
Term
[image]
Definition

A. P. aeruginosa

B. E.coli

C. S. typhimurium

D. S. boydii

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