Campbell Essential Biology (7th Edition)
7th Edition
ISBN: 9780134765037
Author: Eric J. Simon, Jean L. Dickey, Jane B. Reece
Publisher: PEARSON
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Chapter 15, Problem 16BS
Probiotics, foods and supplements that contain microorganisms, are thought to cure problems of the digestive tract by restoring the natural balance of its microbial community. Sales of these products total billions of dollars a year. Explore the topic of probiotics and evaluate the scientific evidence for their beneficial effects. A good starting point is the website of the U.S. Food and Drug Administration, the agency that regulates advertising claims of dietary supplements.
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Chapter 15 Solutions
Campbell Essential Biology (7th Edition)
Ch. 15 - Place these events in the history of life on Earth...Ch. 15 - DNA replication relies on the enzyme DNA...Ch. 15 - Prob. 3SQCh. 15 - Some species of cyanobacteria form symbiotic...Ch. 15 - The bacteria that cause tetanus can be killed only...Ch. 15 - How is the process used in sewage treatment...Ch. 15 - Prob. 7SQCh. 15 - Prob. 8SQCh. 15 - Prob. 9SQCh. 15 - Prob. 10IMT
Ch. 15 - For each statement below, identify which major...Ch. 15 - Prob. 12IMTCh. 15 - Imagine you are on a team designing a moon base...Ch. 15 - Interpreting Data Because bacteria divide by...Ch. 15 - State or local public health department regularly...Ch. 15 - Probiotics, foods and supplements that contain...
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- Which statement is NOT a concept in microbes present in animals? A. Each individual animal has its unique set of microbial flora. B. There are normal microbial flora present in key parts of an animal. C. Personal hygiene and decontamination can remove all microbes in an animal. D. Some microbes are incidental and transient.arrow_forwardbased on the article What happens to the microbial environment as cheeses like Gouda, Cheddar, or Parmesan are aged? I need help finding the answer in the articlearrow_forwardMatch the early scientists with their notable discoveries: Alexander Fleming Howard Florey and Ernst Chain Selman Waksman Paul Ehrlich Choices - discovered penicllin after studying mold growth established an approach for screening potential antimicrobial compounds discovered many antimicrobials after studying soil microbes, including antinomycetes mass production of penicillin and study of its use in humansarrow_forward
- A drug failed to work. Even if resistance is not an issue, the antimicrobials are found to only have a discrete range of bacteria that they can exert their effects on. Why is this the found case? Question options: Microbial components vary over different species and strains. If the organism naturally doesn't express the target component, the drug won't be able to exert an effect on it. Antimicrobials are designed to be effective for a predetermined period of time. An older antibiotic can't exert any effects on a new microbial strain. There is a different antimicrobial designed for every strain of bacteria. As a result there is no crossover in action due to selective targeting. The body filters antimicrobial compounds to interact with their target microorganism. Until research determines how to control this, antimicrobials will only ever have a very discrete range of targets.arrow_forwardLouis Pasteur said, “The role of the infinitely small in nature is infinitely large.” Explain what he meant, using examples of the roles of microorganisms in health, industry, and the environment. Thank you!arrow_forwardIf you do not have a microscope or even a hand lens, how will you know that microorganisms exist in your environment? Cite as many proofs of its existence as you can think of.arrow_forward
- Please provide evidence supporting or refuting the following statement: Humans consume microbes every day with little health risk.arrow_forwardProvide evidence in support of or refuting the following statement: Microbial life can exist in the complete absence of sunlight or organic nutrients minimum 500 of wordsarrow_forwardRefrigerated milk can spoil due to microbial growth. Do these microbes typically cause disease in humans? Consider the environment in your body and the environment in which the microbes are growing.arrow_forward
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