EBK MICROBIOLOGY:W/DISEASES BY BODY...-
5th Edition
ISBN: 9780134608242
Author: BAUMAN
Publisher: PEARSON
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Chapter 6, Problem 12CT
How might the study of biofilms benefit humans?
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Chapter 6 Solutions
EBK MICROBIOLOGY:W/DISEASES BY BODY...-
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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- How are biofilms significant to the human body and the environment?arrow_forwardWhich of the following is not true about biofilms a) are caused by many Gram positive and Gram negative bacteria as well as algae and fungi b) are highly contagious c) are hard to treat due to impermeability to drugsarrow_forwardWhat are examples of a bacterium that produces a biofilm ?arrow_forward
- What are the advantages of biofilms as a growthmode over a planktonic lifestyle?arrow_forwardWhy is biofilm development in catheters (tubes that can be inserted into a body cavity, duct or vessel which allow drainage or injection of fluids) such a dangerous source of infection in hospitals?arrow_forwardRelate several advantages to communication within a biofilm.arrow_forward
- Biofilms are often formed on artificial surfaces in the human body. During medical procedures, when artificial joints, intravenous catheters, urinary catheters are placed and injections are made, commensals/mutualists may be introduced into new sites in the body and there they may form biofilms. Which statement below is NOT a reason to explain why such bacteria living in biofilms are so difficult to eliminate? O layers of biofilm prevent phagocytes from killing bacteria O layers of biofilm acts a a diffusion barrier against antibiotics O biofilm stimulates bacteria to grow continually in the log/exponential phase of growth O layers of biofilm acts a a diffusion barrier against antibodies/immunoglobulins O bacteria often in stationary phase of growtharrow_forwardWhich of the following are ways in which forming a biofilm can make a bacterial infection more difficult to fight off or treat? Choose all that apply. Bacteria in biofilms can cause the immune system to attack human cells Bacteria in biofilms can have increased antibiotic resistance Bacteria in biofilms can no longer move Bacteria in biofilms are difficult for white blood cells to engulfarrow_forwardBiofilms represent an important environmental niche. A) How does growth on a surface differ from growth in a suspended laboratory culture? (In other words: How do biofilm-forming cultures differ from planktonic cultures) B) Describe the stages of biofilm development including cellular and extracellular components? C) What processes regulate might regulate biofilm formation? Is quorum sensing involved and if so, how common is it? D) Why would biofilms promote the formation of genetic variants? What are the mechanisms by which this might occur? These questions are all related.arrow_forward
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