After performing the viable plate count, 50 colonies are counted on a plate with a final dilution of 1:1,000. Calculate the CFUs/mL.
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A sugar fermentation broth containing lactose is inoculated…
A sugar fermentation broth containing lactose is inoculated with an unknown sample. Following incubation, the broth in the tube is a bright yellow color. What does this mean?
What would be the correct result in a Kligler’s Iron agar tu…
What would be the correct result in a Kligler’s Iron agar tube inoculated with an organism that only ferments glucose and reduces sulfur.
Prior to reading the results of the Voges-Proskauer test, wh…
Prior to reading the results of the Voges-Proskauer test, what must be added to the tube?
When performing the spread plate method, prior to plating a…
When performing the spread plate method, prior to plating a _____________ must be performed.
Which of the following is considered a structural stain?
Which of the following is considered a structural stain?
Following addition of hydrogen peroxide, a positive result f…
Following addition of hydrogen peroxide, a positive result for catalase will show
What must be included in sugar fermentation broth in order t…
What must be included in sugar fermentation broth in order to detect gas production?
An unknown sample is plated on trypticase soy agar (TSA), bl…
An unknown sample is plated on trypticase soy agar (TSA), blood agar, and MacConkey agar. Following incubation there is growth on the TSA and growth on the blood agar with clearings around the colonies, but no growth on the MacConkey agar. What can you determine about this organism?
Southerners used all of the following to justify slavery EXC…
Southerners used all of the following to justify slavery EXCEPT: