Serial dilutions are made from a broth culture of Shewanella putrefaciens in order to determine the number of bacteria in the culture.  Following the dilution series, 0.1 ml of the 10-7 dilution tube is plated on Plate A, 0.1 ml of the 10-8 dilution tube is plated on Plate B.  RESULTS Plate A:  427 colonies Plate B:  87 colonies Question: What was the number of bacteria in the original S. putrefaciens broth culture? Note: Make sure your answer reflects proper scientific notation! Use the ^ to denote an exponent, i.e. 1 x 10-4 would be written as 1 x 10^-4. Note: Don’t forget the units. No points without units!

This is a blood agar plate. Identify the hemolysis in section B

What is the mordant used in the Gram staining procedure?

Bacteria that do not ferment the sugar on an MSA plate will appear _____________ in color.

What is the media that is enriched and differential but not selective?

Serial dilutions are made from a broth culture of Shewanella putrefaciens in order to determine the number of bacteria in the culture.  Following the dilution series, 0.1 ml of the 10-7 dilution tube is plated on Plate A, 0.1 ml of the 10-8 dilution tube is plated on Plate B.  RESULTS Plate A:  427 colonies Plate B:  87 colonies Question: What was the number of bacteria in the original S. putrefaciens broth culture? Note: Make sure your answer reflects proper scientific notation! Use the ^ to denote an exponent, i.e. 1 x 10-4 would be written as 1 x 10^-4. Note: Don’t forget the units. No points without units!

What is the pH indicator found in MacConkey agar?

Identify the part of the microscope labeled A

Archaea can grow at temperatures greater than 80 0C. What is their temperature classification?

This is a MacConkey agar plate. Which organisms on the plate are positive for fermentation? Name all that apply.