Thioglycolate Medium Contains the Following: Yeast Extract, Pancreatic Digest of Casein

question 15

Multiple Choice

Thioglycolate medium contains the following: yeast extract, pancreatic digest of casein, glucose, L-cysteine, sodium chloride, sodium thioglycolate, and agar.It is considered a complex medium because

• A)depending on their oxygen utilization pattern, organisms will grow differently on it.
• B)it has multiple ingredients for a broad range of nutrients.
• C)both yeast extract and pancreatic digest of casein are not chemically defined.
• D)thioglycolate has a carbon-sulfur bond that many microbes cannot break enzymatically.

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