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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No one would dispute the facts that the use of antibiotics is extremely beneficial. Why then are there currently discussions around the idea that we as a society should be limiting our antibiotic use? What are the pros and cons of utilizing antibacterial and antimicrobial products (NOT antibiotics) on a daily basis? Do you agree or disagree that the use of antibiotics should be reduced and if so, how should it be done?
Provide an example of an organism within each of the four main nutritional categories of microbes and describe how each obtains its essential nutrients.
Provide evidence in support of or refuting the following statement: Microbial life can exist in the complete absence of both sunlight or organic nutrients.
Polymerase chain reaction (PCR) is a technology that requires high temperatures to reproduce DNA fragments. Explain why the discovery of thermophilic archaea and their associated DNA polymerases was critical to the success of this technique.
Summarize how the electron transport chain functions to produce ATP in a bacterial cell versus eukaryotic cell. Explain whether or not the term chemiosmosis accurately illustrates this process.
Broad-spectrum drugs target a wide variety of bacterial pathogens. Even when the broad-spectrum drug is capable of killing a target pathogen, it may not be the best treatment.
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Broad-spectrum antimicrobials are usually toxic to the host cells.
Broad-spectrum antimicrobials only work if they are used shortly after the infection begins.
Broad-spectrum antimicrobials may kill much of the normal microbiota.
Broad-spectrum antimicrobials are not able to kill bacteria that are in their log phase of growth.
Broad-spectrum antimicrobials may stimulate excess growth of the normal microbiota.
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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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- The statements are given below, which will best describe why antimicrobial drugs that affect cell wall synthesis tend to have selective toxicity when used by humans? Human cells only synthesize peptidoglycan as a food source Cell wall synthesis is a common metabolic process in humans and bacteria. Most bacteria only synthesize cell walls during their log phase of growth. Human cells do not have cell walls.arrow_forwardA compound synthesized by bacteria or fungi that destroys or inhibitsthe growth of other microbes is a(n)a. synthetic drug b. antibiotic c. antimicrobial drug d. competitive inhibitorarrow_forwardBased on the table, what can you conclude from the said data? Title: Indicate whether the microorganism is Resistant, Intermediate or Susceptible with the antibiotic based on the measurement of their zone of inhibition. ANTIBIOTIC MICROORGANISMS Pseudomonas aeruginosa Escherichia coli Staphylococcus aureus Amoxicillin (AMC) Resistant Resistant Resistant Cephalothin (CF) Resistant Susceptible Resistant Chloramphenicol (C) Intermediate Susceptible Resistant Ciprofloxacin (CIP) Susceptible Susceptible Resistant Clindamycin (CC) Resistant Resistant Resistant Erythromycin (E) Resistant Resistant Resistant Oxacillin (OX) Resistant Resistant Resistant Penicillin G (P) Resistant Resistant Resistant Streptomycin (S) Resistant Susceptible Resistant Tetracycline (TE) Resistant Intermediate Resistant Tobramycin (TM) Susceptible…arrow_forward
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