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 21.4, Problem 1TQ
Summary Introduction
To review:
The way by which ruminant fermentation provides food molecules that can be utilized by the animal host and the ability of the host to utilize the waste products formed by microbial
Introduction:
An anaerobic process that leads to the breakdown of complex organic molecules into their simpler forms by the action of anaerobic microbes is referred to as fermentation. The rumen of the animals also possesses several anaerobic microbes that ferment the ingested food. The colon region of the large intestine of human beings is also referred to as a fermenter.
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Assume tu inoculated 100 facultative anaerobic cells unto nutrient agar and incubated the plate aerobically. You then inoculated 100 cells of the same species unto nutrient agar and incubated the second plate anaerobically. After incubation for 24 hours, you should theoretically have:
A) More coloneis on the aerobic plate
B) More colories on the anaerobic plate
C) The same number of colonies on both paltes
D) Fewer colonies on the anaerobic plate
E) None of the above
Assume tu inoculated 100 facultative anaerobic cells unto nutrient agar and incubated the plate aerobically. You then inoculated 100 cells of the same species unto nutrient agar and incubated the second plate anaerobically. After incubation for 24 hours, you should theoretically have:
A) More coloneis on the aerobic plate
B) More colories on the anaerobic plate
C) The same number of colonies on both paltes
D) Fewer colonies on the anaerobic plate
Chapter 21 Solutions
Microbiology: An Evolving Science (Fourth Edition)
Ch. 21.1 - Prob. 1TQCh. 21.1 - Prob. 2TQCh. 21.1 - Prob. 3TQCh. 21.2 - Prob. 1TQCh. 21.4 - Prob. 1TQCh. 21.4 - Prob. 2TQCh. 21.4 - Prob. 3TQCh. 21.5 - Prob. 1TQCh. 21.6 - Prob. 1TQCh. 21.6 - Prob. 2TQ
Ch. 21.6 - Prob. 3TQCh. 21.6 - Prob. 4TQCh. 21 - Prob. 1RQCh. 21 - Prob. 2RQCh. 21 - Prob. 3RQCh. 21 - Prob. 4RQCh. 21 - Prob. 5RQCh. 21 - Prob. 6RQCh. 21 - Prob. 7RQCh. 21 - Prob. 8RQCh. 21 - Prob. 9RQCh. 21 - Prob. 10RQCh. 21 - Prob. 11RQCh. 21 - Prob. 12RQCh. 21 - Prob. 13RQCh. 21 - Prob. 14RQCh. 21 - Prob. 1TQCh. 21 - Prob. 2TQCh. 21 - Prob. 3TQ
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- Which of the statements about alcohol producing fermentation is FALSE? a) Lactic acid may be produced as a byproduct b) It produces CO2 c) It allows the cell to continue producing ATP when oxygen is low d) It generates more ATP than aerobic respirationarrow_forwardFermentation products produced by the skin-colonizing bacterium Staphylococcus epidermidis benefit humans in which of the following ways? A) Mucus is dissolved by these fermentation products B) Pathogens are destroyed by this bacterium through phagocytosis C) These products bind to receptors and interfere with viral infections D) They reduce the pH to values less hospitable to pathogens E) This acid consumes nutrientsarrow_forwardWhen both glucose and lactose are present in the media in which E. coli is growing, which is the preferred carbon source? a)Lactose b)Both Glucose and Lactose c)Xylose d)Glucosearrow_forward
- Microorganisms are used in the production of a wide variety of fermented products. a) Using an example of a fermented product, explain the role of microorganisms in the production of this product. b) Explain why it is very important to control the quantity of food sources that these microbes metabolize?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_forwardA bacterial organism is used to inoculate mannitol broth medium. Following incubation the broth is yellow. This indicates that the organism: A) can use lactose and glucose B) cannot use lactose C) can use mannitol D) cannot use mannitolarrow_forward
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