Question:
Alcohols are ineffective against bacterial spores because they
Alcohols are ineffective against bacterial spores because they
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Alcohols are effective against:
\[
\boxed{
\text{Vegetative bacteria, fungi and many viruses}
}
\]
They are not sporicidal.
Updated On: Jul 23, 2026
- Do not penetrate membranes
- Require high pH
- Act only on metabolically active cells
- Cause DNA mutations only
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The Correct Option is C
Solution and Explanation
Alcohols (such as ethanol and isopropanol) kill microorganisms by denaturing proteins and disrupting cell membranes.
Bacterial spores are metabolically dormant and possess highly resistant protective layers, making alcohols ineffective against them.
Hence,
\[
\boxed{\text{Alcohols act only on metabolically active cells.}}
\]
Therefore,
\[
\boxed{(C)}
\]
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