Microbiology with Diseases by Body System (5th Edition)
5th Edition
ISBN: 9780134477206
Author: Robert W. Bauman Ph.D.
Publisher: PEARSON
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Chapter 6, Problem 3CT
Two cultures of a facultative anaerobe are 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 dry weights of the cultures? Why?
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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?
Hydrogen Sulfide Production
1) Listen
In the lab you are testing a bacterium's oxygen requirement for growth. You grow
your bacterium in a test tube, without shaking at the appropriate temperature. The
next day you find that your bacterial culture is growing only at the top surface (ie at
the top of the tube closest to the cap) and not dispersed throughout the test tube.
What term would be used to describe the oxygen requirement of this bacterium?
O A) Obligate aerobe.
O B) Microaerophile.
O C) Anaerobe.
D) Obligate anaerobe.
E) Facultative anaerobe.
Chapter 6 Solutions
Microbiology with Diseases by Body System (5th Edition)
Ch. 6 - Why should cardiac nurses and respiratory...Ch. 6 - Cavities Gone Wild Five-year-old Daniel appears to...Ch. 6 - Why do clinical laboratory scientists keep many...Ch. 6 - Boils in the Locker Room For several weeks,...Ch. 6 - Some students transfer some gunk from a 2-week-old...Ch. 6 - Which of the following can grow in a Petri plate...Ch. 6 - In the laboratory, a sterile inoculating loop is...Ch. 6 - Superoxide dismutase _____________. a. causes...Ch. 6 - The most reactive of the four toxic forms of...Ch. 6 - Microaerophiles that grow best with a high...
Ch. 6 - Prob. 6MCCh. 6 - Organisms that preferentially may thrive in icy...Ch. 6 - Prob. 8MCCh. 6 - Which of the following terms best describes an...Ch. 6 - In a defined medium, ______________. a. the exact...Ch. 6 - Which of the following is most useful in...Ch. 6 - Which of the following methods is best for...Ch. 6 - A Coulter counter is a(n) ________________. a....Ch. 6 - Lyophilization can be described as ___________. a....Ch. 6 - Quorum sensing is _____________. a. the ability to...Ch. 6 - Prob. 1FIBCh. 6 - Prob. 2FIBCh. 6 - Prob. 3FIBCh. 6 - Prob. 4FIBCh. 6 - Prob. 5FIBCh. 6 - Fill in the Blanks 6. Cells that shrink in...Ch. 6 - Fill in the Blanks 7. Obligate ________ exist in...Ch. 6 - Prob. 8FIBCh. 6 - Fill in the Blanks 9. Microbes that reduce N2 to...Ch. 6 - Fill in the Blanks 10. A student observes a...Ch. 6 - Fill in the Blanks 11. Chemolithotrophs acquire...Ch. 6 - Prob. 1VICh. 6 - Prob. 2VICh. 6 - High temperature affects the shape of particular...Ch. 6 - Support or refute the following statement:...Ch. 6 - Explain quorum sensing, and describe how it is...Ch. 6 - Why must media, vessels, and instruments be...Ch. 6 - Why is agar used in microbiology?Ch. 6 - What is the difference between complex media and...Ch. 6 - Draw and label the four distinct phases of a...Ch. 6 - If there are 47 cells in 1 l of sewage, how many...Ch. 6 - Prob. 9SACh. 6 - Prob. 10SACh. 6 - Explain the differences among photoautotrophs,...Ch. 6 - Contrast the media described in Tables 6.3 and 6.4...Ch. 6 - How does a chemostat maintain a constant...Ch. 6 - A scientist describes an organism as a...Ch. 6 - Pasteurization is a technique that uses...Ch. 6 - Two cultures of a facultative anaerobe are grown...Ch. 6 - Some organisms require riboflavin (vitamin B2) to...Ch. 6 - A scientist inoculates a bacterium into a complex...Ch. 6 - How can regions within biofilms differ in their...Ch. 6 - A scientific article describes a bacterium as an...Ch. 6 - Prob. 8CTCh. 6 - Prob. 9CTCh. 6 - Starting with 10 bacterial cells per milliliter in...Ch. 6 - Suppose you perform a serial dilution of 0.1-ml...Ch. 6 - How might the study of biofilms benefit humans?Ch. 6 - The filamentous bacterium Beggiatoa gets its...Ch. 6 - Given that Haemophilus ducreyi is a...Ch. 6 - Examine the graph in Figure 6.3. Note that the...Ch. 6 - Prob. 16CTCh. 6 - Using the terms in Figure 6.8a, describe the...Ch. 6 - Prob. 18CTCh. 6 - Prob. 19CTCh. 6 - Prob. 20CTCh. 6 - Prob. 21CTCh. 6 - Prob. 22CTCh. 6 - Viable plate counts are used to estimate...Ch. 6 - Using the following terms, fill in the following...
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