Microbiology: An Introduction
11th Edition
ISBN: 9780321733603
Author: Gerard J. Tortora, Berdell R. Funke, Christine L. Case
Publisher: Benjamin Cummings
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Textbook Question
Chapter 21, Problem 1A
A laboratory test used to determine the identity of Staphylococcus aureus is its growth on mannitol salt agar. The medium contains 7.5% sodium chloride (NaCl). Why is it considered a selective medium for S. aureus?
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This is a catalase-positive, coagulase-negative, gram-positive coccus isolated from a urine specimen from a 20-year-old female college student. The image shown is a Mueller Hinton plate streaked with a 0.5 MacFarland standardized inoculum and a 5 microgram disk of novobiocin after overnight incubation. What is the identification of the isolate?
Please select the single best answer
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Explain why the media where the Staphylococcus aureus is plated has turned yellow but the media where Staphyloccocus epidermidis plated is still pink? The media used would be the Mannitol Salt Agar Medium.
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Chapter 21 Solutions
Microbiology: An Introduction
Ch. 21 - Discuss the usual mode of entry of bacteria into...Ch. 21 - What bacteria are identified by a positive...Ch. 21 - Prob. 3RCh. 21 - Complete the table of epidemiology below.Ch. 21 - Why do some states require a test for antibodies...Ch. 21 - Prob. 6RCh. 21 - Prob. 7RCh. 21 - Prob. 8RCh. 21 - Prob. 9RCh. 21 - A laboratory test used to determine the identity...
Ch. 21 - Prob. 2ACh. 21 - Prob. 3ACh. 21 - Prob. 4ACh. 21 - Prob. 1MCQCh. 21 - Prob. 2MCQCh. 21 - Prob. 3MCQCh. 21 - A 12-year-old boy had a fever, rash, headaches,...Ch. 21 - A patient has conjunctivitis. If you isolated...Ch. 21 - You microscopically examine scrapings from a case...Ch. 21 - Prob. 7MCQCh. 21 - Prob. 8MCQCh. 21 - Prob. 9MCQCh. 21 - Prob. 10MCQCh. 21 - Prob. 1CAECh. 21 - Prob. 2CAECh. 21 - Prob. 3CAE
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