1.2. Prof. Ravi Krishna

Try these first

1. 1.

   What does CFU stand for?

   Hint

   Think about how we measure bacterial colonies.

2. 2.

   What type of medium is used to culture bacteria?

   Hint

   Consider what bacteria need to grow.

3. 3.

   What is the primary focus of the CPCB microorganisms standards?

   • Reducing water turbidity
   • Limiting pathogen levels
   • Counting all microorganisms

   Hint

   Think about public health measures.

4. 4.

   True or False: Non-viable microorganisms can pose the same risk as viable ones.

   • True
   • False

   Hint

   Reflect on the definitions discussed in class.

5. 5.

   Given a water sample with an initial concentration of 200 CFUs/ml, explain how you would prepare samples for accurate colony counting.

   Hint

   Think about making the bacteria counts manageable.

6. 6.

   Discuss the implications of relying solely on turbidity as a measure of water quality and the potential pitfalls related to microbial analysis.

   Hint

   Consider how cloudiness might not directly indicate the presence of pathogens.