Brock Biology of Microorganisms (15th Edition)
15th Edition
ISBN: 9780134261928
Author: Michael T. Madigan, Kelly S. Bender, Daniel H. Buckley, W. Matthew Sattley, David A. Stahl
Publisher: PEARSON
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Textbook Question
Chapter 1.11, Problem 1MQ
- What is meant by the term “enrichment culture”?
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Chapter 1 Solutions
Brock Biology of Microorganisms (15th Edition)
Ch. 1.1 - In what ways are microorganisms important to...Ch. 1.1 - Why are microbial cells useful for understanding...Ch. 1.1 - What is a microbial colony and how is one formed?Ch. 1.1 - What are bacterial colonies and how are they...Ch. 1.2 - What structures are universal to all types of...Ch. 1.2 - Prob. 2MQCh. 1.2 - What structures can be used to distinguish between...Ch. 1.2 - Prob. 1CRCh. 1.3 - How old is Earth and when did cells first appear...Ch. 1.3 - Prob. 2MQ
Ch. 1.3 - Why were cyanobacteria so important in the...Ch. 1.3 - Prob. 1CRCh. 1.4 - Prob. 1MQCh. 1.4 - Prob. 2MQCh. 1.4 - Prob. 3MQCh. 1.4 - Prob. 1CRCh. 1.5 - Define the terms magnification and resolution.Ch. 1.5 - Prob. 2MQCh. 1.5 - Prob. 1CRCh. 1.6 - Prob. 1MQCh. 1.6 - Prob. 2MQCh. 1.6 - How can cells be made to fluoresce?Ch. 1.6 - Prob. 1CRCh. 1.7 - Prob. 1MQCh. 1.7 - Prob. 2MQCh. 1.7 - Prob. 1CRCh. 1.8 - Prob. 1MQCh. 1.8 - Prob. 2MQCh. 1.8 - Prob. 1CRCh. 1.9 - Prob. 1MQCh. 1.9 - Prob. 2MQCh. 1.9 - Besides ending the controversy over spontaneous...Ch. 1.9 - Explain the principle behind the Pasteur flask in...Ch. 1.10 - How do Kochs postulates ensure that cause and...Ch. 1.10 - What advantages do solid media offer for the...Ch. 1.10 - Prob. 3MQCh. 1.10 - Prob. 1CRCh. 1.11 - What is meant by the term enrichment culture?Ch. 1.11 - Prob. 2MQCh. 1.11 - What were the major microbiological interests of...Ch. 1.12 - Describe the experiments that proved DNA was the...Ch. 1.12 - Why are microbial cells useful tools for basic...Ch. 1.12 - Describe the experiments that proved DNA to be the...Ch. 1.13 - What kinds of evidence support the three-domain...Ch. 1.13 - What is a phylogenetic tree?Ch. 1.13 - List three reasons why rRNA genes are suitable for...Ch. 1.13 - What insights led to the reconstruction of the...Ch. 1.14 - How are viruses different from Bacteria, Archaea,...Ch. 1.14 - What four bacterial phyla contain the most...Ch. 1.14 - Prob. 3MQCh. 1.14 - What features (or lack of features) can be used to...Ch. 1 - Pasteurs experiments on spontaneous generation...Ch. 1 - Describe the lines of proof Robert Koch used to...Ch. 1 - Imagine that all microorganisms suddenly...
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- Why is it necessary to maintain aseptic conditions in microbiology?arrow_forwardWhy is the culture medium referred to as a highly enriched laboratory soil?arrow_forwardBased on the knowledge acquired about the conservation and propagation of microorganisms, propose methodologies for:a) conservation of stock culture (used infrequently) of baker's yeast (S. cerevisiae);b) conservation of the working culture (used daily) of the baker's yeast;c) activation (1st stage of propagation) of the work culture;d) propagation of cultures until inoculating a 100 L reactor toi) production of baker's yeast;ii) ethanol production.arrow_forward
- What makes a culture media as SELECTIVE? Explain and provide examples of selective type of culture media.arrow_forwardIn zone electrophoresis, why is it possible to isolate the components of a sample and recover them for identification? a) what influences the direction of migration of the components of a sample in zone electrophoresis?arrow_forwardDescribe how an appropriate inoculum can be usedto successfully start an enrichment culture.arrow_forward
- ). Consider a culture medium on which only gram-positive organisms such as Staphylococcus aureus colonies can grow due to an elevated NaCl level. A yellow halo surrounds the growth, indicating the bacterium fermented sugar in the medium, decreasing the pH as a result and changing the color of a pH indicator chemical. This type of medium would be referred to as a(n): A) Selective medium. B) Differential medium. C) Enrichment culture. D) Selective and differential medium. E) Differential and enrichment culture.arrow_forwardWhat makes a culture media DIFFERENTIAL? Explain and provide examples of differential type of culture media.arrow_forwardWhy is bacterial culture useful to grow bacteria?arrow_forward
- Mannitol salt agar is often used to distinguish between different species of Staphylococcus, a gram positive bacterium that is well adapted to living on dry, salty skin. Disease-causing strains of Staphylococcus ferment mannitol; non-pathogenic strains cannot use mannitol. Is the medium Defined or Complex?arrow_forwardWhy is a microtome an indispensable tool in a Microtechnique laboratory?arrow_forwardWhat is the similarities of differential centrifugation and gradient centrifugation?arrow_forward
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