Microbiology: ... by Taxonomy (Instructor's)
5th Edition
ISBN: 9780134298757
Author: BAUMAN
Publisher: PEARSON
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Chapter 10, Problem 5MC
Summary Introduction
Introduction:
Different antimicrobial drugs are effective against a wide variety of microbes. The pathogens sometimes acquire resistance to one or more than one microbial agents. Multiple drug resistance and cross-resistance are the types of resistance seen in pathogens against antimicrobial drugs.
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Choose the combination of answers that most accurately completes the statement. Which statement is not an aim in the use of drugs in antimicrobial chemotherapy? The drug should a. have selective toxicity b. be active even in high dilutions c. be broken down and excreted rapidly d. be microbicidal
Which of the following is not a property of an antimicrobialagent?(a) Must have a favorable chemotherapeutic index(b) Must be selectively toxic(c) Must be effective against viral diseases(d) Must have a known concentration over a period oftime required to eliminate a pathogen(e) b and c
Which of the following is NOT a property of an antimicrobial agent?
a. Must have a known concentration over a period of time required to eliminate a pathogen
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c. must be selectively toxic
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Chapter 10 Solutions
Microbiology: ... by Taxonomy (Instructor's)
Ch. 10 - Prob. 1MCCh. 10 - Prob. 2MCCh. 10 - Prob. 3MCCh. 10 - Which of the following statements is relevant in...Ch. 10 - Prob. 5MCCh. 10 - Multiple-drug-resistant microbes _____. a. are...Ch. 10 - Prob. 7MCCh. 10 - Prob. 8MCCh. 10 - Prob. 9MCCh. 10 - Label each figure below to indicate the class of...
Ch. 10 - What specific test for antimicrobial efficacy is...Ch. 10 - What characteristics would an ideal...Ch. 10 - Contrast narrow-spectrum and broad-spectrum drugs....Ch. 10 - Why is the fact that drug Z destroys the NAM...Ch. 10 - Prob. 4SACh. 10 - Prob. 5SACh. 10 - Prob. 6SACh. 10 - Prob. 7SACh. 10 - Prob. 8SACh. 10 - Compare and contrast the actions of polyenes,...Ch. 10 - Prob. 10SACh. 10 - Prob. 1CTCh. 10 - Prob. 2CTCh. 10 - Prob. 3CTCh. 10 - Prob. 4CTCh. 10 - Prob. 5CTCh. 10 - Even though aminoglycosides such as gentamicin can...Ch. 10 - Prob. 7CTCh. 10 - Prob. 8CTCh. 10 - Prob. 9CTCh. 10 - Antiparasitic drugs in the benzimidazole family...Ch. 10 - Prob. 11CTCh. 10 - Scientists have cultured bacteria isolated from...Ch. 10 - Prob. 13CTCh. 10 - Prob. 14CTCh. 10 - Enterococcus faecium is frequently resistant to...Ch. 10 - Using the following terms, fill in the following...Ch. 10 - Prob. 1CCSCh. 10 - Prob. 2CCSCh. 10 - Prob. 3CCSCh. 10 - Prob. 1TMWCh. 10 - Some antimicrobial drugs are harmful to humans....Ch. 10 - Prob. 3TMWCh. 10 - Why is it incorrect to say that an individual...Ch. 10 - Prob. 1EDCS
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- Autoantibodies are probably involved in ________. a. reactions to poison ivy b. pollen allergies c. systemic lupus erythematosus d. HIV/AIDSarrow_forwardWhich ONE of the following best describes nitrofurantoin? Select one: A. A macrolide antimicrobial agent B. An antimicrobial prodrug C. A natural product produced by Streptomyces spp. D. Useful in treating systemic infections E. A nucleic acid synthesis inhibitor Which ONE of the following best describes cephalexin? Select one: A. The bacterial target is located on the internal side of the cytoplasmic membrane B. An agent suitable for community use C. Resistance readily occurs via drug efflux in Gram-positive bacteria D. A parenteral penicillin E. An agent capable of disrupting bacterial membranes Which ONE of the following best describes ciprofloxacin? Select one: A. Active against Streptococcus pneumoniae B. An inhibitor of RNA synthesis C. An antimicrobial prodrug D. A natural product produced by Streptomyces spp. E. Subject to new restrictions and precautions for use due to very rare reports of…arrow_forwardHow do lactoferrins inhibit pathogen growth? Group of answer choices A. Lactoferrins are used by phagocytic cells to digest pathogens once they have been ingested by the phagocytes. B. Lactoferrins bind to pathogens and are secreted during urination. C. These molecules bind iron, which is important for microbial growth. D. These molecules cut the bonds holding NAG and NAM together in bacterial cell walls, causing the bacteria to lyse.arrow_forward
- Many people use antimicrobial soap to kill bacteria on their hands. However, overuse may increase the risk of infection. How could this occur?arrow_forwardRobert Koch (a) proposed a set of guidelines to demonstrate that a specific pathogen causes specific disease symptoms (b) discovered Helicobacter (c) showed that biofilms consist of microorganisms (d) proposed a hypothesis for antibiotic resistance (e) demonstrated that people can be stimulated todevelop immunity to diseasearrow_forwardWhich clinical situation would be appropriate for treatment with a narrow-spectrum antimicrobial drug? Select one: a.prophylaxis against infection after a surgical procedure b.The treatment of strep throat caused by culture identified as Streptococcus pyogenes c.None of the Above d.the treatment of a polymicrobial mixed infection in the intestine e.Empiric therapy (based on educated guesswork) of pneumonia while waiting for culture resultsarrow_forward
- Drying is an effective antimicrobial strategy because:(a) It oxidizes cellular macromolecules(b) It limits the amount of water available to microbes(c) It increases susceptibility to UV irradiation(d) It triggers the thermal death pointarrow_forwardBroad-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. Which statement best explains why a broad spectrum drug might be an undesirable treatment choice? 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.arrow_forwardWhich antimicrobial drug does not inhibit cell wall synthesis? a) gentamicin b) vancomycin c) cephalosporins d) penicillinsarrow_forward
- A factor in the zone of inhibition size on the Kirby-Bauer plate is: a. amount of medium placed on the plate b. rate of diffusion of the drug used c. stage of growth of the microbe placed on the plate d. all of thesearrow_forwardwhat is the mechanism of action for penicillins? a. injury to plasma membrane b. inbibition of protein synthesis c. inhibition of cell wall synhesis d. inhibition of nucleic acid synthesis e. none of the above describes the mechanism of action for penicillinsarrow_forwardThere are fewer antifungal, anti protozoal, and antihelminth drugs compared to antibacterial drugs because these organism: a) do not cause many human infectious b) are not affected by antimicrobial drugs c) are so similar to human cells that drug selective toxicity is difficult d) are parasites found inside human cells e) have fewer target sites compared to bacteriaarrow_forward
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USMLE-Rx Antimicrobial Therapy; Author: USMLE-Rx;https://www.youtube.com/watch?v=Pka1Ynlrqtw;License: Standard Youtube License