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Questions and Answers
What does CFU/mL stand for?
What does CFU/mL stand for?
- Colony fermentation units per milliliter
- Cell-forming units per milliliter
- Colony-forming units per milliliter (correct)
- Colony-forming units per gram
What is the significance of a Colony-forming unit (CFU)?
What is the significance of a Colony-forming unit (CFU)?
- It quantifies the size of a colony on a petri dish.
- It is used to measure viral counts specifically.
- It represents the total count of all microbes in a sample.
- It denotes a colony of microbes grown from a single microbe. (correct)
Which of the following expressions can also be used to quantify microbial presence?
Which of the following expressions can also be used to quantify microbial presence?
- CFU/kg
- CFU/mg
- CFU/g (correct)
- CFU/mL/g
In what context would CFU/mL specifically be most relevant?
In what context would CFU/mL specifically be most relevant?
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Which statement about serial dilution is accurate?
Which statement about serial dilution is accurate?
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Study Notes
Aseptic Technique and CFU/mL Determination
- Aseptic technique is crucial for preventing contamination in microbiological practices.
- Ensures the growth of specific microorganisms without interference from others.
Colony-Forming Units (CFU)
- CFU refers to a visible mass of microorganisms derived from a single microbial cell.
- Essential for quantifying microbial populations in a sample.
Expression of Results
- Microbiological enumeration results are typically reported as CFU/g or CFU/mL.
- CFU/g indicates the number of colony-forming units per gram of a sample.
- CFU/mL signifies the number of colony-forming units per milliliter of a liquid sample.
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