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1. Laboratory strains of Staphylococcus aureus (S. aureus is Gram +), Escherichia coli (E.coli is Gram-), and Bacillus cereus (B. cereus is Gram +) were exposed to three I different antibiotics (bacitracin, penicillin G, and tetracycline) using the Kirby-Bauer technique. Below are the results. Values represent the zones of inhibition: Organism S. aureus E.coli Tetracycline 40 mm (S) Bacitracin Penicillin G 10 mm (R) 40 mm (S) 10 mm (R) 3 mm (R) 30 mm (S) right 25 mm (1) B. cereus 4 mm (R) 5 mm (R) Use the table on the next page to determine which bacteria were sensitive (S), resistant (R) or intermediate (I) to the antibiotics. For your answer you can simply put S, R or I into the table above next to the appropriate zone of inhibition numbers. 2. Referring to question 1, on the basis of these results which antibiotics were narrow spectrum? Broad spectrum? Explain your answers.

1. Laboratory strains of Staphylococcus aureus (S. aureus is Gram +), Escherichia coli (E.coli is Gram-), and Bacillus cereus (B. cereus is Gram +) were exposed to three I different antibiotics (bacitracin, penicillin G, and tetracycline) using the Kirby-Bauer technique. Below are the results. Values represent the zones of inhibition: Organism S. aureus E.coli Tetracycline 40 mm (S) Bacitracin Penicillin G 10 mm (R) 40 mm (S) 10 mm (R) 3 mm (R) 30 mm (S) right 25 mm (1) B. cereus 4 mm (R) 5 mm (R) Use the table on the next page to determine which bacteria were sensitive (S), resistant (R) or intermediate (I) to the antibiotics. For your answer you can simply put S, R or I into the table above next to the appropriate zone of inhibition numbers. 2. Referring to question 1, on the basis of these results which antibiotics were narrow spectrum? Broad spectrum? Explain your answers.

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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I only need question 2 please, 

1. Laboratory strains of Staphylococcus aureus (S. aureus is Gram +), Escherichia coli (E.coli is Gram-), and Bacillus cereus (B. cereus is Gram +) were exposed to three I different antibiotics (bacitracin, penicillin G, and tetracycline) using the Kirby-Bauer technique. Below are the results. Values represent the zones of inhibition: Organism S. aureus E.coli Tetracycline 40 mm (S) Bacitracin Penicillin G 10 mm (R) 40 mm (S) 10 mm (R) 3 mm (R) 30 mm (S) right 25 mm (1) B. cereus 4 mm (R) 5 mm (R) Use the table on the next page to determine which bacteria were sensitive (S), resistant (R) or intermediate (I) to the antibiotics. For your answer you can simply put S, R or I into the table above next to the appropriate zone of inhibition numbers. 2. Referring to question 1, on the basis of these results which antibiotics were narrow spectrum? Broad spectrum? Explain your answers.
Transcribed Image Text:1. Laboratory strains of Staphylococcus aureus (S. aureus is Gram +), Escherichia coli (E.coli is Gram-), and Bacillus cereus (B. cereus is Gram +) were exposed to three I different antibiotics (bacitracin, penicillin G, and tetracycline) using the Kirby-Bauer technique. Below are the results. Values represent the zones of inhibition: Organism S. aureus E.coli Tetracycline 40 mm (S) Bacitracin Penicillin G 10 mm (R) 40 mm (S) 10 mm (R) 3 mm (R) 30 mm (S) right 25 mm (1) B. cereus 4 mm (R) 5 mm (R) Use the table on the next page to determine which bacteria were sensitive (S), resistant (R) or intermediate (I) to the antibiotics. For your answer you can simply put S, R or I into the table above next to the appropriate zone of inhibition numbers. 2. Referring to question 1, on the basis of these results which antibiotics were narrow spectrum? Broad spectrum? Explain your answers.
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