Professional Courses
Industry-relevant training in Business, Technology, and Design to help professionals and graduates upskill for real-world careers.
Categories
Interactive Games
Fun, engaging games to boost memory, math fluency, typing speed, and English skills—perfect for learners of all ages.
Typing
Memory
Math
English Adventures
Knowledge
Enroll to start learning
You’ve not yet enrolled in this course. Please enroll for free to listen to audio lessons, classroom podcasts and take practice test.
Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What does CFU stand for?
💡 Hint: Think about what we measure in microbiology.
Question 2
Easy
What is a common medium used for culturing bacteria?
💡 Hint: Recall the substance that supports bacterial growth.
Practice 4 more questions and get performance evaluation
Interactive Quizzes
Engage in quick quizzes to reinforce what you've learned and check your comprehension.
Question 1
What does CFU measure?
- The total number of bacteria
- The number of viable bacteria
- The amount of nutrients
💡 Hint: Think about what CFU stands for.
Question 2
True or False: Turbidity is always a reliable indicator of microbial contamination.
- True
- False
💡 Hint: Consider other factors that can contribute to turbidity.
Solve 1 more question and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
You perform a serial dilution of a water sample and find 50 CFUs on the agar plate from a 1:1000 dilution. How many CFUs were in the original sample?
💡 Hint: Remember to consider how much you diluted the original sample.
Question 2
During a water quality test, a sample has high turbidity and you're unsure whether it's due to microorganisms or sediment. How would you proceed?
💡 Hint: Consider what the next logical step is to confirm microbial presence.
Challenge and get performance evaluation