1. The differential aspect of MacConkey agar allows for the determination of which bacteria are lactose fermenters and which are not. 2. Blood agar is used to determine an organism's ability for hemolysis. Blood agar is differential in this regard. 3. EMB agar uses two dyes, eosin and methylene blue, to restrict the growth of gram-positive organisms, making this agar (EMB) in this regard. 4. Crystal violet dye in MacConkey agar will prevent some organisms from growing, making MacConkey agar in this regard. The crystal violet dye can also be used in the determination of the ability to ferment the carbohydrate in the agar; making MacConkey agar in this regard. 5. Use of an agar which contains an elevated amount of salt would allow some organisms to grow while preventing the growth of other organisms. This media would be considered selective

1. The differential aspect of MacConkey agar allows for the determination of which bacteria are lactose fermenters and which are not. 2. Blood agar is used to determine an organism's ability for hemolysis. Blood agar is differential in this regard. 3. EMB agar uses two dyes, eosin and methylene blue, to restrict the growth of gram-positive organisms, making this agar (EMB) in this regard. 4. Crystal violet dye in MacConkey agar will prevent some organisms from growing, making MacConkey agar in this regard. The crystal violet dye can also be used in the determination of the ability to ferment the carbohydrate in the agar; making MacConkey agar in this regard. 5. Use of an agar which contains an elevated amount of salt would allow some organisms to grow while preventing the growth of other organisms. This media would be considered selective

Comprehensive Medical Assisting: Administrative and Clinical Competencies (MindTap Course List)

6th Edition

ISBN:9781305964792

Author:Wilburta Q. Lindh, Carol D. Tamparo, Barbara M. Dahl, Julie Morris, Cindy Correa

Publisher:Wilburta Q. Lindh, Carol D. Tamparo, Barbara M. Dahl, Julie Morris, Cindy Correa

Chapter42: Basic Microbiology

Section: Chapter Questions

Problem 4CR

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