12 Questions
What is the primary goal of sterilization in medical microbiology?
To remove or destroy all microorganisms including bacterial spores, viruses, and fungi
Which of the following is a characteristic of antiseptics?
They are non-toxic for superficial application on living tissue
What is the primary difference between disinfection and sterilization?
Sterilization eliminates all microorganisms, while disinfection does not
Which level of disinfectant is effective against vegetative bacteria, fungi, and viruses, but does not kill bacterial spores?
High-level disinfectant
What is the most effective method of sterilization?
Heat
Which of the following is NOT a method of sterilization?
Disinfection
What is the mechanism of action of dry heat sterilization?
Destructive oxidation of the cell constituents
What is the primary use of incineration in the medical microbiology laboratory?
Disposal of infectious hospital waste
What is the temperature and time required for sterilization using a hot air oven?
160 ⁰C for 2 hours or 180 ⁰C for 1 hour
What is the purpose of Tyndallization or fractional sterilization?
To sterilize heat-labile media
What is the temperature used for pasteurization of milk using the holding method?
63 ⁰C for 30 minutes
What is the purpose of red heat in sterilization?
To sterilize bacteriological loops
Test your knowledge of sterilization, disinfection, disinfectants, and antiseptics in medical microbiology. Learn about the differences between these processes and their applications. Ideal for medical students and professionals.
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