Unformatted text preview: (sometimes described as Chinese letters) may be found on the skin ? 7. Name and distinguish between the two types of visible hemolysis that can be produced by Streptococci. (describe the media that is used and the appearance that identifies each type of hemolysis) 8. How is the catalase test performed? What is it testing? Describe a positive result. 9. Does the title of Fig. 22.1, p. 193 accurately apply to both sets of figures that are drawn below the title ? Explain. 11. When a laboratory isolates an organism and tests it for sensitivity to antibiotics, a control culture is always evaluated at the same time. If the insert provided with the antibiotic disc indicates that the zone of inhibition for the control culture is 15 Ð 23 mm. and you record a zone of 20 mm, what does that tell you about the control organism in relation to that antibiotic and in relation to the test conditions ?...
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- Spring '08
- Bacteria, positive result, 20 mm, 23 mm