Microbiology Fundamentals: A Clinical Approach
3rd Edition
ISBN: 9781259709227
Author: Marjorie Kelly Cowan Professor, Heidi Smith
Publisher: McGraw-Hill Education
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Textbook Question
Chapter 6, Problem 15Q
Bacteria and archaea are ubiquitous on the planet. Would it be to our advantage (if it were possible) to eliminate all of them, in an effort to protect the human population from current and emerging diseases? Why or why not?
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Chapter 6 Solutions
Microbiology Fundamentals: A Clinical Approach
Ch. 6.1 - List the essential nutrients of a bacterial cell.Ch. 6.1 - Prob. 2AYPCh. 6.1 - List and define four different terms that describe...Ch. 6.1 - Prob. 4AYPCh. 6.1 - Compare and contrast the processes of diffusion...Ch. 6.1 - Identify the effects of isotonic, hypotonic, and...Ch. 6.1 - Name two types of passive transport and one type...Ch. 6.1 - Prob. 1NPCh. 6.1 - Prob. 2NPCh. 6.1 - Prob. 3NP
Ch. 6.1 - Prob. 1MMCh. 6.2 - List and define five terms used to express the...Ch. 6.2 - Summarize three ways in which microorganisms...Ch. 6.2 - Identify three important environmental factors...Ch. 6.2 - List and describe the five types of associations...Ch. 6.2 - Discuss characteristics of biofilms that...Ch. 6.2 - Which statements are true with respect to...Ch. 6.3 - Summarize the steps of cell division used by most...Ch. 6.3 - Define doubling time, and describe how it leads to...Ch. 6.3 - Compare and contrast the four phases of growth in...Ch. 6.3 - Identify one culture-based and one...Ch. 6.3 - Prob. 2MMCh. 6 - Which descriptors are likely to have applied to...Ch. 6 - Prob. 2QCh. 6 - Speculate about how earths atmosphere came to...Ch. 6 - Which of the following is true of passive...Ch. 6 - Compare the effects of a hypertonic, hypotonic,...Ch. 6 - Usually scientists looking for life on other...Ch. 6 - An organism that can synthesize all its required...Ch. 6 - Provide evidence in support of or refuting this...Ch. 6 - Develop an explanation for why biofilm bacteria...Ch. 6 - Most bacteria increase their numbers by a. sexual...Ch. 6 - Looking at figure 6.3, explain how a cell in a...Ch. 6 - In binary fission, the parent chromosome is...Ch. 6 - A cell exposed to a hypertonic environment will...Ch. 6 - Prob. 14QCh. 6 - Bacteria and archaea are ubiquitous on the planet....Ch. 6 - Prob. 16QCh. 6 - How can you explain the fact that an unopened...Ch. 6 - Prob. 18QCh. 6 - In a viable count, each ____ represents a ______...Ch. 6 - If an egg salad sandwich sitting in a car on a...Ch. 6 - Scientists now believe that most bacteria in...Ch. 6 - Prob. 1VC
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- two ways bacteria are harmful and two ways they are helpful to humans?arrow_forwardWhat role does the human microfauna play in protecting humans against pathogens? (At this point in the class, you should be able to provide a detailed list of activities bacteria species perform in and on our body that protect us from pathogens.)arrow_forwardScientists have cultured bacteria isolated from within frozen mammoths, which are thousands of years old. Why would it not be surprising if these microbes were to show some resistance to modern antimicrobials that didn’t exist when the mammoths died?arrow_forward
- What does it mean to say microbes are ubiquitous?arrow_forwardHow would you explain to a biology class that in the next decade,some diseases currently thought to be noninfectious will probably befound to be caused by microbes?arrow_forwardIn term of the microbes in human body, Are the areas the same or are they different per individuals? Why?arrow_forward
- What is the ultimate way that microbes will, as Pasteur said, have the“last word”?arrow_forwardMicroorganisms have been described as the most chemically diverse, the most adaptable, and the most ubiquitous organisms on Earth. What other "most" descriptions could be added to this list?arrow_forwardWhy has it been so difficult to associate human disease, orhealth, with changes in the gut microbial community?arrow_forward
- For instance, what would happen if ice-minus bacterial genes were transferred to strains of bacteria that are accustomed to living under cold conditions? ( Should genetically engineered microbes be released even in “controlled” experiments that might result in beneficial applications of biotechnology? How do you think the scientific field can prevent the escape of genetically altered microbes in field experiments?arrow_forwardA microbiologist argued that there is no such thing as “normal” microbiota of the human body, since the population is dynamic and is constantly changing, depending on diet and external environment. What would be an argument against this microbiologist’s view?arrow_forwardA recent study found that 480 Streptomyces strains freshly isolated from the soil are resistant to at least six different antibiotics. In fact, some isolates are resistant to 20 different antibiotic drugs.Why do you think these bacteria (which are neither pathogenic nor exposed to human use of antibiotics) are resistant to so many drugs? What might be the implications for human bacterial pathogens?arrow_forward
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