Modified MasteringMicrobiology with Pearson eText -- Standalone Access Card -- for Microbiology with Diseases by Body System (4th Edition)
4th Edition
ISBN: 9780321962485
Author: Robert W. Bauman Ph.D.
Publisher: PEARSON
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Chapter 14, Problem 3MC
Summary Introduction
Introduction:
Microbes, the tiny and microscopic living organisms, have a cosmopolitan distribution. Microbes differ in their mode of living like free living, parasitic, and mutualistic. Some microbes act as pathogen and cause infections and diseases in other higher organisms such as animals and humans.
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A 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?
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Chapter 14 Solutions
Modified MasteringMicrobiology with Pearson eText -- Standalone Access Card -- for Microbiology with Diseases by Body System (4th Edition)
Ch. 14 - Prob. 1TMWCh. 14 - A Deadly Carrier In 1937, a man employed to lay...Ch. 14 - Prob. 2TMWCh. 14 - Prob. 3TMWCh. 14 - Why is mutated Streptococcus pneumoniae, which...Ch. 14 - Prob. 5TMWCh. 14 - Prob. 6TMWCh. 14 - TB in the Nursery In the early fall, a neonatal...Ch. 14 - Why is an acute disease with a high rate of...Ch. 14 - Prob. 3CCS
Ch. 14 - Prob. 1EDCSCh. 14 - Prob. 8TMWCh. 14 - Prob. 1MCCh. 14 - Prob. 2MCCh. 14 - Prob. 3MCCh. 14 - The most frequent portal of entry for pathogens is...Ch. 14 - Prob. 5MCCh. 14 - Prob. 6MCCh. 14 - Prob. 7MCCh. 14 - Prob. 8MCCh. 14 - Prob. 9MCCh. 14 - Prob. 10MCCh. 14 - Which of the following statements is the best...Ch. 14 - Prob. 12MCCh. 14 - Prob. 13MCCh. 14 - Prob. 14MCCh. 14 - Prob. 15MCCh. 14 - Prob. 1FIBCh. 14 - Fill in the Blanks 2. Infections that may go...Ch. 14 - Prob. 3FIBCh. 14 - Prob. 4FIBCh. 14 - Prob. 5FIBCh. 14 - Prob. 6FIBCh. 14 - Prob. 7FIBCh. 14 - Prob. 8FIBCh. 14 - Prob. 9FIBCh. 14 - Prob. 10FIBCh. 14 - Prob. 1SACh. 14 - Prob. 2SACh. 14 - Prob. 3SACh. 14 - List Kochs four postulates, and describe...Ch. 14 - Prob. 5SACh. 14 - Prob. 6SACh. 14 - Describe the parenteral route of infection.Ch. 14 - In general, contrast transient microbiota with...Ch. 14 - Contrast the terms infection and morbidity.Ch. 14 - Prob. 10SACh. 14 - Each map below shows the locations (dots) of cases...Ch. 14 - Prob. 2VICh. 14 - Explain why Ellen H., a menopausal woman, may have...Ch. 14 - Prob. 2CTCh. 14 - A 27-year-old woman went to her doctors office...Ch. 14 - Over 30 children younger than three years of age...Ch. 14 - Prob. 5CTCh. 14 - Prob. 6CTCh. 14 - Corals are colonial marine animals that feed by...Ch. 14 - If a mutation occurred in Escherichia coli that...Ch. 14 - Using the following terms, fill in the following...
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- which of the following is not a way that normal microbial prevent growth of competing microbes? a. production of substances harmful to competitors b. more efficient utilization of nutrients c. changing pH of environment d. all of the above are used by normal microbiota against competitors e. none of the above are utilized by normal microbiotaarrow_forwardThere are estimates that the microorganisms present in the human body outnumber the cells of the body. Which of the following is incorrect about microbes (normal flora )? a. • Compete with other microbes for space by colonizing the surface of the human body • b. Toxins produce to inhibit the growth of other pathogens - c .compete with other microorganisms for nutrition. d. Neutrophils activate to act against other pathogensarrow_forwardChoose the best below ? Which of the following best describes the term microbiota? a. The microbes that are smaller than a eukaryotic cell.b. The microbes that cause disease.c. The microbes that are decomposers.d. The microbes that are naturally found on or within our bodies.arrow_forward
- Foodborne pathogens often require the presence of a large number of microbes before an active infection results. These microbes would have a high A.) median infectious dose (ID50). B.) incubation period. C.) virulence. D.) median lethal dose (LD50). E.) mortality.arrow_forwardAn overgrowth of microbes can decrease dissolved oxygen levels to the point where organisms cannot survive. True or False?arrow_forwardWhich of the following is not part of Koch’s Postulates? a. A specific microorganism must be present in a disease b. The organism must be isolated into pure culture c. Living organisms spring forth from non-living materials d. All of the choices are part of Koch’s Postulatesarrow_forward
- Which of the following is true of commensal bacterium? Question 2 options: A) commensal bacteria do not receive any benefit from its host B) commensal bacteria only colonize adult hosts C) commensal bacterium may also be an opportunistic pathogen D) commensal bacterium cannot cause an infection its hostarrow_forwardWhich of the following is a difference between transient and resident microbiota? Transient microbiota are pathogenic, and resident microbiota are not. Resident microbiota remain on the host for an extended period. Humans do not have transient microbiota. Transient microbiota can be opportunistic pathogens, and resident microbiota cannot. Resident microbiota cause disease and transient microbiota do not.arrow_forwardWhich aspects of a microbial disease make it more likely to cause an outbreak? In other words, what advantages do these microbes have that others do not? Use an example of at least one outbreak in your description. 2. What measures are taken in the United States to prevent outbreaks from occurring? 3. What disease not prevalent in the United States do you think has the potential of causing a major outbreak in the United States? Name at least one reason to support your assertion.arrow_forward
- The United States has banned the use of the pesticide DDT. Does this mean that DDT can no longer pose a threat to human health in this country?arrow_forwardWhich of the following is NOT a true statement about microbial infections and disease? 1. Some infections are caused by normal microbiota acting as opportunistic pathogens 2. For some infections, a portion of infected people may never develop any signs or symptoms of disease 3. The time between the effective exposure and appearance of the very first signs or symptoms is called the incubation period 4. None of the other four answers (All are true statements) 5. All infectious diseases are communicable; i.e., they can be transmitted between hostsarrow_forwardWhich of the following factors in today’s world make it dif-ficult to keep disease-causing microorganisms in check from ahealth point of view?(a) Lack of a balanced distribution of wealth(b) Increased and quick world travel(c) Encroachment of humans into virgin jungles(d) Antibiotic-resistant bacteria(e) All of the abovearrow_forward
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