Question

Cloudiness is a sign that bacteria have grown in a -_______________ after inoculation and incubation.

Answer 1

Answer:

Bacterial growth.

Explanation:

Bacterial growth in broths is indicated by the development of a cloudy appearance. If the newly inoculated broth looks cloudy at the start, you will have no way to determine if this is due to bacterial growth during the incubation period.

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Answer 2

Answer:

Bacterial growth in broths is characterised by the formation of a hazy appearance. If the newly infected broth seems hazy at first, there is no way to tell if this is due to bacterial growth throughout the incubation period. If your broth seems hazy, dump it and produce a new broth with less microorganisms.

Explanation:

• Inoculation is the technique of introducing microbes or microbial suspensions into a culture medium.
• The process of allowing injected microorganisms to develop under specified growth conditions is known as incubation.

The development of bacteria (or other microorganisms such as protozoa, microalgae, or yeasts) in batch culture may be represented using four separate phases in autecological studies:

lag phase (A),

log phase or exponential phase (B),

stationary phase (C),

and death phase (D)

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