TSI (Triple Sugar Iron) Test Questions With Complete Solutions

List the tests that are involved with TSI. correct answer: H2S Gas and Carbohydrate Fermentation What is the media for H2S Gas? correct answer: TSI agar What method do you use to place content on the media? correct answer: stab and drag motion what is the substrate for H2S gas? correct answer: cystein What is the product for H2S gas? correct answer: H2S What is the reagent for H2S gas? correct answer: iron in media What is the pH indicator for H2S gas? correct answer: none What is the + appearance of H2S gas? correct answer: Black ppt. when H2S reacts with iron to form iron sulfied What is the positive organisms for H2S gas? correct answer: S. typhimurium and P. vulgaris What is the media for Carbohydrate fermentation? correct answer: TSI agar what is the substrate for the carbohydrate fermentation? correct answer: glucose, sucrose, and lactose whats it the product of carbohydrate fermentation? correct answer: organic acids