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Classification of Bacterial Culture Media

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Classification of Bacterial Culture Media

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Questions and Answers

What is the main difference between liquid and solid media in bacterial culture?

Solid media support most non-fastidious bacteria, while liquid media contain special ingredients

Solid media are used in test tubes, while liquid media are used in Petri dishes

Agar is added to solid media but not to liquid media (correct)

Liquid media are used for bacterial motility tests, while solid media are used for inoculum preparation

Which type of media is best suited for demonstrating bacterial motility?

Solid media

Complex media

Liquid media

Semi-solid media (correct)

What is the primary function of nutrient agar in bacterial culture?

To support the growth of microorganisms (correct)

To separate motile from non-motile strains

To provide a general turbidity

To demonstrate bacterial motility

Why are complex media called 'complex'?

Because they contain special ingredients for the growth of microorganisms Signup and view all the answers

Which type of media allows for the appreciation of colony morphology and pigmentation?

Solid media Signup and view all the answers

In which type of media are colonies most likely to be seen after incubation?

Solid media Signup and view all the answers

Why is agar added to nutrient broth to form nutrient agar?

To solidify the medium for culturing microorganisms Signup and view all the answers

What is the primary function of basic media in bacterial culture?

Support the growth of microorganisms without special nutritional requirements Signup and view all the answers

What is the main source of nitrogen in culture media?

Amino acids Signup and view all the answers

Which type of media is best suited for the isolation and identification of bacteria?

Basic media Signup and view all the answers

What is the primary function of selective media in bacterial culture?

Inhibit the growth of certain types of bacteria while allowing others to grow Signup and view all the answers

What is the difference between nutrient broth and peptone water?

Nutrient broth is a yellowish fluid medium, while peptone water is clear colorless fluid medium Signup and view all the answers

Why is nutrient agar used in bacterial culture?

To obtain isolated colonies for identification and preservation Signup and view all the answers

When would deep agar be specifically useful in bacterial culture?

For growing anaerobic bacteria Signup and view all the answers

Which type of culture media provides specific requirements such as inorganic salts or particular growth factors?

Enrichment media Signup and view all the answers