PRCC Microbiology Practice Exam 2025 – 400 Free Practice Questions to Pass the Exam

Question: 1 / 400

What effect does desiccation have on microbial growth?

Promotes growth

Inhibits growth

Desiccation, or the process of drying out, generally inhibits microbial growth because most microorganisms require a certain level of moisture to thrive and reproduce. Water is essential for various cellular processes, including metabolism and enzymatic reactions. When the available moisture is reduced, it disrupts these essential processes, leading to a slowdown or complete halt of growth.

In many cases, desiccation can also lead to the death of sensitive microorganisms, particularly those that cannot withstand dry conditions. Some microbes can enter a dormant state or form spores to survive until conditions improve, but overall, desiccation creates an environment that is not conducive to active growth and reproduction. This characteristic makes desiccation a useful method for preserving food and controlling microbial contamination in various settings.

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Kills microbes

Has no effect

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