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MIC 121 Introduction what are microbes Objective Question
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Question

What is a Colony-Forming Unit (CFU) as defined in the context of a colony counter?
Options
A A unit representing the total number of dead and live cells in a sample.
B A precise unit used to estimate the number of bacteria or fungal cells capable of multiplying.
Correct Answer
C A measure of the total biomass of microorganisms in a culture.
D A dimensionless quantity used for comparative analysis of microbial populations.
Correct Answer

Option B is the correct answer.

Detailed Explanation

Page 44, under 'COLONY COUNTER', states: 'A colony-forming unit is a precise unit used to estimate the number of bacteria or fungal cells contained within any particular sample.' and further clarifies 'This method is used to keep track of viable CFUs, which itself is defined as one that still has the ability to multiply via a technique like binary fission under strictly controlled conditions.'

Hint

Check the definition of CFU within the 'COLONY COUNTER' section, specifically focusing on its relation to viable cells.

Question Info

Course: MIC 121
Topic: Introduction what are microbes
Type: Objective
Difficulty: Not specified
Question 652 of 984
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