3.1. Culturing Method

Try these first

1. 1.

   What is the first step in the culturing method?

   Hint

   Think about what you need to analyze first.

2. 2.

   What does CFU stand for?

   Hint

   It refers to counting colonies.

3. 3.

   What does CFU stand for?

   • Colony Forming Unit
   • Cell Forming Unit
   • Colonial Formation Unit

   Hint

   It refers to something that grows into a colony.

4. 4.

   Incubation is important because it allows bacteria to _____?

   • True
   • False

   Hint

   Remember what happens during incubation.

5. 5.

   A water sample reveals a turbidity level that suggests high bacteria concentration. How would you prepare for microbial analysis?

   Hint

   Consider how dilution affects your counting accuracy.

6. 6.

   If a culturing method yields 200 colonies from a diluted 1 ml sample, what is the CFU count per 100 ml?

   Hint

   Think about how you scale up from 1 ml to 100 ml.