Scelta multipla
Which plating method is commonly used to count the number of viable bacteria in a sample?
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10. Dynamics of Microbial Growth
Plating Methods
Scelta multipla
The streak-plate method is useful for:
A
Quantify the number of cells in a culture.
B
Measuring the metabolism of a cell.
C
Isolating a specific species of bacteria.
D
Determine cell shape of bacteria.
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Understand the purpose of the streak-plate method: It is primarily used to isolate a single species of bacteria from a mixed culture.
Recognize that the streak-plate method involves spreading a diluted microbial sample over the surface of an agar plate using a sterile loop.
Acknowledge that the goal is to separate individual bacterial cells so that they grow into isolated colonies, each derived from a single bacterium.
Consider that once isolated colonies are obtained, they can be used for further analysis, such as identifying the species or studying its characteristics.
Note that while the streak-plate method is excellent for isolating bacteria, it is not used for quantifying cell numbers, measuring metabolism, or determining cell shape.
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