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Media Classification in Microbiology

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Questions and Answers

What is the purpose of synthetic media?

To enrich autotrophs and perform vitamin assays (correct)

To differentiate between types of microbes

To selectively allow the growth of certain types of organisms

To support the growth of a wide variety of microorganisms

Which type of media supports the growth of a large variety of microbes?

Differential media

General purpose media (correct)

Selective media

Synthetic media

What is the function of reagents or chemicals in differential media?

To inhibit the growth of certain microbes

To produce differences in growth that allow differentiation between types of microbes (correct)

To selectively allow the growth of certain types of organisms

To produce clear areas in the agar

What is the purpose of blood agar medium?

To distinguish between hemolytic and non-hemolytic bacteria Signup and view all the answers

What is the characteristic of non-synthetic media?

They are prepared from raw materials such as meat extracts and sugars Signup and view all the answers

What is the purpose of adding sodium azide to a medium?

To inhibit the growth of microorganisms using respiration Signup and view all the answers

What type of medium is used to solidify broth media?

Agar Signup and view all the answers

When would direct enumeration on a suitable selective solid medium be sufficient?

When the organism is expected to be found in large numbers Signup and view all the answers

Why may a pre-enrichment or resuscitation stage be necessary in the isolation procedure?

To allow for the recovery of stressed organisms that have suffered injury Signup and view all the answers

Why may adjustments to the isolation medium be necessary for the recovery of spoilage organisms?

To increase the levels of salt and glucose Signup and view all the answers