After the presumptive test in the MPN method, what is the next step?

True or False:  Bacterial movement via flagella is known as Brownian motion.

True or False: UV light is equally effective on all bactrial species.

Which of the following properties does a Spectrophotometer measure?

In the MPN test, what is indicated by the formation of gas in the Durham tube?

Thermophiles are most likely found in which of the following environments?

List two (2) reasons why bacteria need flagella?

True or False: There are 3,400 bacteria per ml if there were 34 colonies on a culture plate from a 1:100 dilution.

Which of the following is typically used as a selective medium in the presumptive test of MPN?

True or False: As optical density increases, so does the number of bacterial cells in a culture.