what is a culture in microbiology ?
Question
what is a culture in microbiology
Frederick H. Crutchfield
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what is a culture in microbiology
Answer ( 1 )
In microbiology a culture just means you give microbes food and the right conditions so they grow outside the body in the lab.
The food is called medium. It may be a liquid broth like nutrient broth or a solid medium like nutrient agar. Sometimes we add blood antibiotics or pH indicators to make the medium selective or differential.
When you place a sample on the medium and incubate it at the proper temperature the cells divide. After a few hours to days you will see turbidity in broth or colonies on agar.
Those colonies can be picked to obtain a pure culture, meaning only one species is present. Pure cultures are essential for identification antibiotic testing and research.
So a culture is not the same as a species, it is the physical collection of growing microbes that you can observe and manipulate.