Microbiology: An Evolving Science (Fourth Edition)
4th Edition
ISBN: 9780393615098
Author: John W. Foster, Joan L. Slonczewski
Publisher: W. W. Norton & Company
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Chapter 5, Problem 2TQ
Summary Introduction
To review:
The process for the conversion of a facultative anaerobe into an obligate anaerobe.
Introduction:
Certain microbes can grow in the presence of oxygen while others require an environment which is totally devoid of oxygen. The microbes that grow in the presence of oxygen are termed as aerobes while the microbes that survive in the absence of oxygen are known as anaerobes. Anaerobes generate energy through the fermentation process while aerobes produce energy through
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Chapter 5 Solutions
Microbiology: An Evolving Science (Fourth Edition)
Ch. 5.2 - Prob. 1TQCh. 5.2 - Prob. 2TQCh. 5.2 - Prob. 3TQCh. 5.3 - Prob. 1TQCh. 5.4 - Prob. 1TQCh. 5.5 - Prob. 1TQCh. 5.5 - Prob. 2TQCh. 5.5 - Prob. 3TQCh. 5.6 - Prob. 1TQCh. 5.7 - Prob. 1TQ
Ch. 5.7 - Prob. 2TQCh. 5.7 - Prob. 3TQCh. 5 - Prob. 1RQCh. 5 - Prob. 2RQCh. 5 - Prob. 3RQCh. 5 - Prob. 4RQCh. 5 - Prob. 5RQCh. 5 - Prob. 6RQCh. 5 - Prob. 7RQCh. 5 - Prob. 8RQCh. 5 - Prob. 9RQCh. 5 - Prob. 10RQCh. 5 - Prob. 11RQCh. 5 - Prob. 12RQCh. 5 - Prob. 1TQCh. 5 - Prob. 2TQCh. 5 - Prob. 3TQCh. 5 - Prob. 4TQCh. 5 - Prob. 5TQ
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- How would a facultative anaerobe growth curve change if it was placed in the presence of oxygen environment? If the organism were to be placed in an anaerobic environment during log phase, how would the growth curve look?arrow_forwardA chemolithoautotroph is respiring using only iron (Fe3+) and nitrite (NO2-). This bacterium does not consume organic molecules. From where does this organism obtain its carbon?arrow_forwardWhat is one difference between fermentation and anaerobic respiration? Since neither requires oxygen, why would a microbe select one of these versus the other? Name a specific microbe which uses fermentation and a specific microbe which uses anaerobic respiration.arrow_forward
- You set up an anaerobic jar and after incubation the indicator strip is blue. What can you conclude from this? Are the organisms growing on your plate anaerobes? Explain.arrow_forwardIf two cultures of a facultative anaerobe were grown under identical conditions except that one was exposed to oxygen and the other was completely deprived of oxygen, what differences would you expect to see between the two cultures? (What metabolic pathway would be occurring in each? Why?)arrow_forwardA bacterial organism is catalase positive and cytochrome oxidase positive. This could suggest that the organism is an obligate aerobe. True or false?arrow_forward
- Two cultures of a facultative anaerobe are grown in the same medium, but one culture is exposed to air and the other is maintained under anaerobic conditions. Which of the two cultures will contain more cells at the end of a week? Why?arrow_forwardHow might the bacterial growth curve change if a facultative anaerobe was first monitored for growth when grown in the presence of an O2 environment and, during its log (exponential) growth phase, the organism was suddenly placed in an anaerobic environment?arrow_forwardWhy are microorganisms called extremophiles?arrow_forward
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