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Questions and Answers
What is considered the minimum inhibitory concentration (MIC) of an antimicrobial agent against a bacterium?
What is considered the minimum inhibitory concentration (MIC) of an antimicrobial agent against a bacterium?
- The concentration that kills all bacteria
- The highest concentration that promotes bacterial growth
- The lowest concentration that prevents bacterial growth (correct)
- The average concentration of antimicrobial agents
What is the purpose of adjusting the bacterial suspension to achieve turbidity equivalent to that of 0.5 McFarland standard?
What is the purpose of adjusting the bacterial suspension to achieve turbidity equivalent to that of 0.5 McFarland standard?
- To ensure consistent inoculum density (correct)
- To prevent bacterial growth
- To reduce the effectiveness of antimicrobial agents
- To enhance bacterial growth
What is the optimal time frame for using adjusted suspensions for final inoculation after preparation?
What is the optimal time frame for using adjusted suspensions for final inoculation after preparation?
- Within 1 hour of preparation
- Within 30 minutes of preparation
- Within 15 minutes of preparation (correct)
- Within 2 hours of preparation
What is the recommended temperature range for solidifying agar dilution plates after pouring the agar and antimicrobial solution?
What is the recommended temperature range for solidifying agar dilution plates after pouring the agar and antimicrobial solution?
Why are Petri dishes with grids usually used when preparing agar dilution plates?
Why are Petri dishes with grids usually used when preparing agar dilution plates?
What is the purpose of preparing serial two-fold dilutions of an antimicrobial agent?
What is the purpose of preparing serial two-fold dilutions of an antimicrobial agent?
What is the significance of achieving turbidity equivalent to that of 0.5 McFarland standard in bacterial suspensions?
What is the significance of achieving turbidity equivalent to that of 0.5 McFarland standard in bacterial suspensions?
Why is it important to pour agar and antimicrobial solution into Petri dishes on a level surface?
Why is it important to pour agar and antimicrobial solution into Petri dishes on a level surface?
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