Ten grams of hamburger (from a container of hamburger) were added to 90 mL of sterile buffer. This was mixed well in a blender. One-tenth
Ten grams of hamburger (from a container of hamburger) were added to 90 mL of sterile buffer. This was mixed well in a blender. One-tenth of a mL of this slurry was added to 9.9 mL of sterile buffer. After thorough mixing, this suspension was further diluted by successive 1/100 and 1/10 dilutions. One-tenth of a mL of this final dilution was plated onto nutrient agar. After incubation, 52 colonies were present. How many colony-forming units were present in one gram of hamburger?
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