Laboratory Techniques & Quality Control Flashcards
6 cards from real SM practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 Laboratory Techniques & Quality Control flashcards as text
Which method is commonly used for sterilizing microbiological media?
Answer: Autoclaving
Autoclaving is the most effective method for sterilizing microbiological media, using high-pressure steam to kill all microorganisms.
What is the purpose of a Gram stain in microbiology?
Answer: To differentiate bacterial cell wall types
Gram staining differentiates bacteria into Gram-positive and Gram-negative based on their cell wall composition, aiding in identification and treatment selection.
Why is aseptic technique important in microbiology laboratories?
Answer: To prevent contamination and maintain accuracy
Aseptic techniques prevent contamination of microbial cultures and ensure accurate experimental results.
What is a critical step in quality control of microbiological media?
Answer: Ensuring sterility before use
Ensuring sterility of prepared media prevents contamination and ensures reliable experimental results.
Which control measure is used to verify accuracy in microbiological testing?
Answer: Using positive and negative controls
Using positive and negative controls ensures that microbiological tests produce valid and reproducible results.
Why is regular calibration of laboratory instruments important?
Answer: To ensure accuracy and consistency
Regular calibration of instruments like spectrophotometers and incubators ensures accuracy and consistency in microbiological testing.
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