Brock Biology of Microorganisms (14th Edition)
14th Edition
ISBN: 9780321897398
Author: Michael T. Madigan, John M. Martinko, Kelly S. Bender, Daniel H. Buckley, David A. Stahl, Thomas Brock
Publisher: PEARSON
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Textbook Question
Chapter 1, Problem 3AQ
Imagine that all microorganisms suddenly disappeared from Earth. From what you have learned in this chapter, why do you think that animals would eventually disappear from Earth? Why would plants disappear? By contrast, if all higher organisms suddenly disappeared, what in Figure 1.5a tells you that a similar fate would not befall microorganisms?
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Choose one prokaryote (bacteria or archaea) AND one protest. You can choose a species or more general taxonomic group of interest. Then address the following questions for each.
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You discover a new species of bacteria that grows in aquatic environments with high salt levels. While studying these bacteria, you note that their internal environment is similar to the salt concentrations in their surroundings. You also discover that the internal salt concentrations of the bacteria change as the salt concentration in their environment changes. The new species can tolerate small changes in this way, but dies from large changes because it has no mechanism for altering its own internal salt levels. What type of homeostatic mechanism is this species using to regulate its internal salt levels?
regulation
integration
assimilation
conformation
According to Lynn Margulis's theory of endosymbiosis, bacteria entered large cells either as parasites or as undigested prey as
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Endosymbiosis in a nutshell:
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O a
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Chapter 1 Solutions
Brock Biology of Microorganisms (14th Edition)
Ch. 1.1 - If microbial life had not evolved, would you be...Ch. 1.1 - Prob. 2MQCh. 1.2 - Prob. 1MQCh. 1.2 - Prob. 2MQCh. 1.2 - Prob. 3MQCh. 1.3 - How old is Earth and when did cells first appear...Ch. 1.3 - Why were cyanobacteria so important in the...Ch. 1.3 - Prob. 3MQCh. 1.3 - Prob. 4MQCh. 1.4 - How does a microbial community differ from a...
Ch. 1.4 - Prob. 2MQCh. 1.4 - Prob. 3MQCh. 1.4 - Prob. 4MQCh. 1.5 - Prob. 1MQCh. 1.5 - Prob. 2MQCh. 1.5 - Prob. 3MQCh. 1.6 - Prob. 1MQCh. 1.6 - Prob. 2MQCh. 1.7 - Prob. 1MQCh. 1.7 - Besides ending the controversy over spontaneous...Ch. 1.8 - How do Kochs postulates ensure that cause and...Ch. 1.8 - What advantages do solid media offer for the...Ch. 1.8 - Prob. 3MQCh. 1.9 - What is meant by the term enrichment culture?Ch. 1.9 - Prob. 2MQCh. 1.10 - Prob. 1MQCh. 1 - Prob. 1RQCh. 1 - How can prokaryotic and eukaryotic cells be...Ch. 1 - Prob. 3RQCh. 1 - Prob. 4RQCh. 1 - Prob. 5RQCh. 1 - Prob. 6RQCh. 1 - Explain the principle behind the Pasteur flask in...Ch. 1 - Prob. 8RQCh. 1 - Prob. 9RQCh. 1 - What were the major microbiological interests of...Ch. 1 - Select one major subdiscipline of microbiology...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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