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Which of the following plates (dilution factor) would you count/use to determine the original bacterial count? 1 ml Original inoculum Dilutions Plating 1:10 9 ml broth in each tube 1:10 1 ml 1 ml 1:100 1 ml 1:100 2 (1:100) 3 (1:1000) 4 (1:10,000) 5 (1:100,000) 1 ml 1:1000 1 ml 1 ml 1:1000 1:10,000 1 ml 1 ml 1:10,000 1:100,000 1 ml 1:100,000 Calculation: Number of colonies on platex reciprocal of dilution of sample= number of bacteria/ml (For example, if 32 colonies are on a plate of ¹/10,000 dilution, then the count is 32 x 10,000 = 320,000/ml in sample.) Copyright ©2004 Pearson Education, Inc., publishing as Benjamin Cummings

Which of the following plates (dilution factor) would you count/use to determine the original bacterial count? 1 ml Original inoculum Dilutions Plating 1:10 9 ml broth in each tube 1:10 1 ml 1 ml 1:100 1 ml 1:100 2 (1:100) 3 (1:1000) 4 (1:10,000) 5 (1:100,000) 1 ml 1:1000 1 ml 1 ml 1:1000 1:10,000 1 ml 1 ml 1:10,000 1:100,000 1 ml 1:100,000 Calculation: Number of colonies on platex reciprocal of dilution of sample= number of bacteria/ml (For example, if 32 colonies are on a plate of ¹/10,000 dilution, then the count is 32 x 10,000 = 320,000/ml in sample.) Copyright ©2004 Pearson Education, Inc., publishing as Benjamin Cummings

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,...
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Which of the following plates (dilution factor) would you count/use to determine the original bacterial count? 1 ml Original inoculum Dilutions Plating 1:10 9 ml broth in each tube 1:10 1 ml 1 ml 1 ml 1:100 1 ml 1:100 2 (1:100) 3 (1:1000) 4 (1:10,000) 5 (1:100,000) 1:1000 1 ml 1 ml 1:1000 1:10,000 1 ml 1 ml 1:10,000 1:100,000 1 ml 1:100,000 Calculation: Number of colonies on platex reciprocal of dilution of sample=number of bacteria/ml (For example, if 32 colonies are on a plate of 1/10,000 dilution, then the count is 32 x 10,000 = 320,000/ml in sample.) Copyright © 2004 Pearson Education, Inc., publishing as Benjamin Cummings
Transcribed Image Text:Which of the following plates (dilution factor) would you count/use to determine the original bacterial count? 1 ml Original inoculum Dilutions Plating 1:10 9 ml broth in each tube 1:10 1 ml 1 ml 1 ml 1:100 1 ml 1:100 2 (1:100) 3 (1:1000) 4 (1:10,000) 5 (1:100,000) 1:1000 1 ml 1 ml 1:1000 1:10,000 1 ml 1 ml 1:10,000 1:100,000 1 ml 1:100,000 Calculation: Number of colonies on platex reciprocal of dilution of sample=number of bacteria/ml (For example, if 32 colonies are on a plate of 1/10,000 dilution, then the count is 32 x 10,000 = 320,000/ml in sample.) Copyright © 2004 Pearson Education, Inc., publishing as Benjamin Cummings
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