Compare the recipes of Nutrient Agar and XLD Agar.If an organism can grow on both media, on which would you expect it to grow better? Why?

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Compare the recipes of Nutrient Agar and XLD Agar.If an organism can grow on both media, on whick would you expect it to grow better? Why? XLD is a selective mediuam. Is it also a defined or an undefined medium? Why is that formulation desirabl 5 What would be the likely consequence of a. incubating the medium for 48 hours? b. not adding desoxycholate? c. not adding sucrose and lactose? d. not adding lysine? e. not adding ferric ammonium citrate? 6. XLD was designed to separate Salmonella from Shigella, both who do not ferment xylose, sucrose, or lactose. Why does this medium contain these sugars if the organisms it was designed to differentiate do not ferment them?
Compare the recipes of Nutrient Agar and XLD Agar.If an organism can grow on both media, on which would you expect it to grow better? Why? XLD is a selective mediuam. Is it also a defined or an undefined medium? Why is that formulation desirabl 5 What would be the likely consequence of a. incubating the medium for 48 hours? b. not adding desoxycholate? c. not adding sucrose and lactose? d. not adding lysine? e. not adding ferric ammonium citrate? 6. XLD was designed to separate Salmonella from Shigella, both who do not ferment xylose, sucrose, or lactose. Why does this medium contain these sugars if the organisms it was designed to differentiate do not ferment them?

 

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