Laboratory Experiments in Microbiology (11th Edition)
11th Edition
ISBN: 9780321994936
Author: Ted R. Johnson, Christine L. Case
Publisher: PEARSON
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Chapter 27, Problem 3CT
Summary Introduction
To determine:
The reason for fluorescence inE.coli in presence of arabinose.
Introduction:
The arabinose is a monosaccharide and E.coli has an arabinose operon. This operon consists of operator, promoter and three structural genes, that are araA, araBandaraDand the regulatory protein is called araC.
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One of the early results shows that the post-centrifugation pellet of encapsulated cells also contains EA1 and/or Sap. Why is this not proof that Bacillus anthracis cells have both an S-layer and a capsule simultaneously?
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One of the early results shows that the post-centrifugation pellet of encapsulated cells also contains EA1 and/or Sap. Why is this not proof that Bacillus anthracis cells have both an S-layer and a capsule simultaneously?
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link to article: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC106848/
Sydney Brenner isolated Salmonella typhimurium mutants that were
implicated in the biosynthesis of tryptophan and would not grow on
minimal medium. When these bacterial mutants were tested on minimal
medium to which one of four compounds (indole glycerol phosphate,
indole, anthranilic acid, and tryptophan) had been added, the growth
responses shown in the following table were obtained.
Mutant
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medium
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acid
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trp-1
trp-2
trp-3
trp-4
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trp-7
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Chapter 27 Solutions
Laboratory Experiments in Microbiology (11th Edition)
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