Using a MacConkey agar medium is better for finding Salmonella in a stool specimen than using...
Using a MacConkey agar medium is better for finding Salmonella in a stool specimen than using a Luria agar medium. What ingredients in a MacConkey agar medium makes it better, and why? (4 points)
Homework Answers
Luria agar is a simple nutritional media used in microbiology for the growth of many different types of microbe. Many types of bacteria and fungus can grow on this media. This is a general type of media and is very commonly used in microbiology experiments.
But macconkey Agar is a very specific media. It is a selective and differential media. It is used for the selection of Gram Negative bacteria over Gram Positive Bacteria. Different types of Gram Negative bacteria can be differentiated on the basis of their lactose fermenting ability.
If we use luria Agar medium for the growth of Salmonella, then we won't be able to differentiate Salmonella from other types of microbes present in the specimen. But if we use macconkey Agar, then we can easily differentiate Salmonella from other microbes on the basis of their lactose fermenting ability.
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Using a MacConkey agar medium is better for finding Salmonella
in a stool specimen than using...
“3. What ingredient(s) makes MacConkey agar differential?” Click here to enter text. “4. Why is an...
“3. What ingredient(s) makes MacConkey agar differential?” Click here to enter text. “4. Why is an indicator dye used in MacConkey agar?” Click here to enter text. “5. What are some potentially pathogenic bacteria that are lactose fermenters that will grow on MacConkey agar?” Click here to enter text.
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Why might Salmonella strain A and B and the E.
coli strain have different spontaneous mutation rates? Think
about which strain may have a better DNA repair system and how
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TOT Zoo Add Page Insert Table Chart Text Shape Media Comment These questions will serve in lieu of a lab report for Exercise 15, 16, and 17 You will find the answer to these questions in the background, procedure, results and interpretation sections of manual Exercise 15, 16, and 17, videos, Actions of Selective and Differential Media Chart, and the Principle/Theory article in homework section.) General Questions 1. What is the purpose (function) of selective media? (How does...
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