EBK MICROBIOLOGY
12th Edition
ISBN: 8220100659720
Author: CASE
Publisher: PEARSON
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Chapter 21, Problem 10R
Summary Introduction
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An anaerobic gram positive bacillus found on the skin. This bacterium causes skin infections which are often treated with retinoid or benzoyl peroxide.
Introduction:
Propionibacterium acnesis a gram positive anaerobic rod shaped bacterium which is the common cause of acne. Some of the other infections caused by this bacterium include blepharitis and endophthalmitis.
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Alleles at the P locus control seed color. Plants which are pp have white seeds, white flowers and no pigment in vegetative parts. Plants which are P_ have black seeds, purple flowers and may have varying degrees of pigment on stems and leaves. Seed color can be assessed, visually, based on if the seed is white or not white
A gene for mold resistance has been reported and we want to determine its inheritance and whether it is linked to P. For the purposes of this exercise, we will assume that resistance is controlled by a single locus M, and M_ plants are resistant and mm plants are susceptible. Resistance can be measured, under greenhouse conditions, 2 weeks after planting, by injecting each seedling with a spore suspension. After two weeks, the seedlings can be rated as resistant or susceptible, based on whether or not tissue is actively sporulating.
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Chapter 21 Solutions
EBK MICROBIOLOGY
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 - Prob. 10R
Ch. 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 - A laboratory test used to determine the identity...Ch. 21 - Prob. 2ACh. 21 - Prob. 3ACh. 21 - Prob. 4ACh. 21 - Prob. 1CAECh. 21 - Prob. 2CAECh. 21 - Prob. 3CAE
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