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(Solved): H2S production in a TSI tube produces a red slant liquid bubbles in the agar a green tube nothing b ...
H2S production in a TSI tube produces a red slant liquid bubbles in the agar a green tube nothing black precipitate QUESTION 8 : A non lactose-fermenting organism produces a color colony on MacConkey agar. Check all that apply. yellow colorless translucent opaque
Gas production in a TSI tube looks the cracks in the agar a bubble in the durham tube a strong odor coming from the tube sediment at the bottom of the tube wisps of smoke at the top of the tube QUESTION 13 A lactose-fermenting organism produces a color colony on MacConkey agar. Check all that apply. metallic white green red translucent
Expert Answer
7. H2S production in a TSI (triple sugar iron) tube produces a black precipitate. The TSI test is a differential medium used to differentiate among bacterial species based on their ability to ferment carbohydrates and produce sulfur. H2S production occurs when bacteria reduce sulfur-containing compounds in the medium, which results in the formation of black precipitate (FeS) in the tube. The TSI test is commonly used for the identification of enteric bacteria, such as Salmonella and Shigella species, and can provide valuable information about their metabolic capabilities.