Homework Help is Here – Start Your Trial Now!
Science
Biology
1. Calculate the CFU/ml of a urine sample if 49 E. coli colonies were counted on NA when 50 microliters were plated on the NA plate from a 10 dilution tube.

1. Calculate the CFU/ml of a urine sample if 49 E. coli colonies were counted on NA when 50 microliters were plated on the NA plate from a 10 dilution tube.

Human Anatomy & Physiology (11th Edition)
Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
See similar textbooks
icon
Related questions
Question
CFU Remember: = Number of Colonies Counted x ml. 1 Dilution Factor # of ml. plated out Treat grams dirt or organic material as follows: 1 gram 1 cubic centimeter (1 cm) =1 mL. %3D CFU V;D;=V,D2 OCD = Volume x Dilution V=Volume D=dilution 1. Calculate the CFU/ml of a urine sample if 49 E. coli colonies were counted on NA when 50 microliters were plated on the NA plate from a 10-6 dilution tube. 2. Plating 0.1 mL of a sample diluted by a factor of 10 produced 43 colonies. What was the original concentration (CFU/ml) in the sample? 3. You have inoculated 100 microliters of a sample diluted by a factor of 103 on a NA plate. After incubation, you count 58 colonies. What was the original concentration (CFU/ml) in the sample?
Transcribed Image Text:CFU Remember: = Number of Colonies Counted x ml. 1 Dilution Factor # of ml. plated out Treat grams dirt or organic material as follows: 1 gram 1 cubic centimeter (1 cm) =1 mL. %3D CFU V;D;=V,D2 OCD = Volume x Dilution V=Volume D=dilution 1. Calculate the CFU/ml of a urine sample if 49 E. coli colonies were counted on NA when 50 microliters were plated on the NA plate from a 10-6 dilution tube. 2. Plating 0.1 mL of a sample diluted by a factor of 10 produced 43 colonies. What was the original concentration (CFU/ml) in the sample? 3. You have inoculated 100 microliters of a sample diluted by a factor of 103 on a NA plate. After incubation, you count 58 colonies. What was the original concentration (CFU/ml) in the sample?
Expert Solution
trending now

Trending now

This is a popular solution!

steps

Step by step

Solved in 2 steps

SEE SOLUTIONCheck out a sample Q&A here
Blurred answer
Knowledge Booster
Phlebotomy procedures
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.
Similar questions
  • SEE MORE QUESTIONS
Recommended textbooks for you
Human Anatomy & Physiology (11th Edition)
Human Anatomy & Physiology (11th Edition)
Biology
ISBN:
9780134580999
Author:
Elaine N. Marieb, Katja N. Hoehn
Publisher:
PEARSON
Biology 2e
Biology 2e
Biology
ISBN:
9781947172517
Author:
Matthew Douglas, Jung Choi, Mary Ann Clark
Publisher:
OpenStax
Anatomy & Physiology
Anatomy & Physiology
Biology
ISBN:
9781259398629
Author:
McKinley, Michael P., O'loughlin, Valerie Dean, Bidle, Theresa Stouter
Publisher:
Mcgraw Hill Education,
Molecular Biology of the Cell (Sixth Edition)
Molecular Biology of the Cell (Sixth Edition)
Biology
ISBN:
9780815344322
Author:
Bruce Alberts, Alexander D. Johnson, Julian Lewis, David Morgan, Martin Raff, Keith Roberts, Peter Walter
Publisher:
W. W. Norton & Company
Laboratory Manual For Human Anatomy & Physiology
Laboratory Manual For Human Anatomy & Physiology
Biology
ISBN:
9781260159363
Author:
Martin, Terry R., Prentice-craver, Cynthia
Publisher:
McGraw-Hill Publishing Co.
Inquiry Into Life (16th Edition)
Inquiry Into Life (16th Edition)
Biology
ISBN:
9781260231700
Author:
Sylvia S. Mader, Michael Windelspecht
Publisher:
McGraw Hill Education
SEE MORE TEXTBOOKS