Why do microbiologists use cultured plates with 30 to 300 colonies used for calculations?  2. Why is ground beef a better bacterial growth medium than a steak or roast. 3. Why does repeated freezing and thawing increase bacterial growth if meat is then left at room temperature?

An Illustrated Guide To Vet Med Term
4th Edition
ISBN:9781305465763
Author:ROMICH
Publisher:ROMICH
Chapter11: The Great Communicator
Section: Chapter Questions
Problem 14MC
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Part A.

1.Why do microbiologists use cultured plates with 30 to 300 colonies used for calculations? 

2. Why is ground beef a better bacterial growth medium than a steak or roast.

3. Why does repeated freezing and thawing increase bacterial growth if meat is then left at room temperature?

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