4 - Dilution and Analysis
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Practice Questions
Test your understanding with targeted questions
Define CFU.
💡 Hint: What does CFU stand for?
What does turbidity mean?
💡 Hint: What term describes how clear or cloudy water is?
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Interactive Quizzes
Quick quizzes to reinforce your learning
What does CFU stand for?
💡 Hint: Think about what measurement is used for viable bacteria.
True or False: Turbidity guarantees the presence of viable pathogens.
💡 Hint: Consider what needs to be done to assess whether microorganisms are viable.
2 more questions available
Challenge Problems
Push your limits with advanced challenges
A water tank sample is taken, showing 300 visible colonies after incubation. If the dilution factor was 100 times, calculate the original concentration of bacteria in the water sample.
💡 Hint: Make sure to use the dilution factor correctly.
Explain the implications of high turbidity and non-viable bacteria on water quality assessment.
💡 Hint: Think about your previous learning on viable vs. non-viable organisms.
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