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3. Based on his findings at the farm, the USDA inspector was also conçerned that the milk could be contaminated with E. coli 0157 H7 (a pathogenic E. coli strain). Therefore the lab took a sample of the milk and used it to inoculate the medium shown below. (a) What is the name of this medium? (Provide both the acronym and the name spelled out). (b) What does this result tell you about the characteristics of the bacteria on this plate? (Make sure you describe all of the characteristics!) (c) Is the USDA inspector's concern about E. coli O157:H7 justified? Explain! D Focus

3. Based on his findings at the farm, the USDA inspector was also conçerned that the milk could be contaminated with E. coli 0157 H7 (a pathogenic E. coli strain). Therefore the lab took a sample of the milk and used it to inoculate the medium shown below. (a) What is the name of this medium? (Provide both the acronym and the name spelled out). (b) What does this result tell you about the characteristics of the bacteria on this plate? (Make sure you describe all of the characteristics!) (c) Is the USDA inspector's concern about E. coli O157:H7 justified? Explain! D Focus

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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Please answer only question #3 with the plate

3. Based on his findings at the farm, the USDA inspector was also concerned that the milk could be contaminated with E. coli 0157 H7 (a pathogenic E. coli strain). Therefore the lab took a sample of the milk and used it to inoculate the medium shown below. AM SRmib (a) What is the name of this medium? (Provide both the acronym and the name spelled out). (b) What does this result tell you about the characteristics of the bacteria on this plate? (Make sure you describe all of the characteristics!) + 100% (c) Is the USDA inspector's concern about E. coli Ol57:H7 justified? Explain! DFocus 04:01 AM 11/19/2020 W a 0 門
Transcribed Image Text:3. Based on his findings at the farm, the USDA inspector was also concerned that the milk could be contaminated with E. coli 0157 H7 (a pathogenic E. coli strain). Therefore the lab took a sample of the milk and used it to inoculate the medium shown below. AM SRmib (a) What is the name of this medium? (Provide both the acronym and the name spelled out). (b) What does this result tell you about the characteristics of the bacteria on this plate? (Make sure you describe all of the characteristics!) + 100% (c) Is the USDA inspector's concern about E. coli Ol57:H7 justified? Explain! DFocus 04:01 AM 11/19/2020 W a 0 門
Comments AaBbCcC AaB Find ormal T No Spac. Heading 1 Heading 2 Replace Title Paragraph A Select Dictate Editor Styles Editing Voice Editor A USDA inspector has been tasked with investigating a dairy whose pasteurization processes are suspect. After inspecting the farm and the milking sheds, the inspector took several samples of pasteurized milk and sent them to the lab for analysis. At the lab serial dilutions were done to determine the CFUS/ml in the milk sample. The standards for safe milk in NY State require that bacterial counts for pasteurized milk should not exceed 20,000 CFUS/ml. The total coliform amount should not exceed 10 CFUS/ml. 1. Given the amount of bacteria that could be present in the pasteurized milk, explain why it would be necessary to use serial dilutions to accurately determine the CFUS/ml. 2. The procedure used by the lab for the serial dilutions is shown below. 0.2 ml from each of the indicated dilutions was used to inoculate plates. The CFUS/plate are indicated. Note: pay verv close attention to how the dilutions were done! (a) What is the dilution factor for each tube (1-5)? (b) Determine the number of CFUS/ml in the pasteurized milk from the dairy. Show your work! (c) Is the dairy in compliance with NY State regulations regarding milk quality? Explain your answer! 1 ml 1 ml 1 ml
Transcribed Image Text:Comments AaBbCcC AaB Find ormal T No Spac. Heading 1 Heading 2 Replace Title Paragraph A Select Dictate Editor Styles Editing Voice Editor A USDA inspector has been tasked with investigating a dairy whose pasteurization processes are suspect. After inspecting the farm and the milking sheds, the inspector took several samples of pasteurized milk and sent them to the lab for analysis. At the lab serial dilutions were done to determine the CFUS/ml in the milk sample. The standards for safe milk in NY State require that bacterial counts for pasteurized milk should not exceed 20,000 CFUS/ml. The total coliform amount should not exceed 10 CFUS/ml. 1. Given the amount of bacteria that could be present in the pasteurized milk, explain why it would be necessary to use serial dilutions to accurately determine the CFUS/ml. 2. The procedure used by the lab for the serial dilutions is shown below. 0.2 ml from each of the indicated dilutions was used to inoculate plates. The CFUS/plate are indicated. Note: pay verv close attention to how the dilutions were done! (a) What is the dilution factor for each tube (1-5)? (b) Determine the number of CFUS/ml in the pasteurized milk from the dairy. Show your work! (c) Is the dairy in compliance with NY State regulations regarding milk quality? Explain your answer! 1 ml 1 ml 1 ml
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