What is the primary mechanism of action for quaternary ammonium compounds as dis

Practice Questions

Q1
What is the primary mechanism of action for quaternary ammonium compounds as disinfectants?
  1. Oxidation of cellular components
  2. Disruption of cell membranes
  3. Inhibition of protein synthesis
  4. Interference with nucleic acid synthesis

Questions & Step-by-Step Solutions

What is the primary mechanism of action for quaternary ammonium compounds as disinfectants?
Correct Answer: Quaternary ammonium compounds disrupt cell membranes.
  • Step 1: Understand that quaternary ammonium compounds are a type of disinfectant.
  • Step 2: Know that these compounds interact with the outer layer of microorganisms, which includes bacteria and viruses.
  • Step 3: Recognize that the primary action of these compounds is to disrupt the cell membrane of the microorganisms.
  • Step 4: When the cell membrane is disrupted, it causes the contents of the cell to leak out.
  • Step 5: This leakage leads to cell lysis, which means the cell breaks apart and dies.
  • Step 6: As a result, the microorganism cannot survive, and this is how quaternary ammonium compounds disinfect.
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