Microbiology: With Diseases By.. -Modern Access
4th Edition
ISBN: 9780321916969
Author: BAUMAN
Publisher: PEARSON
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Textbook Question
Chapter 10, Problem 2MC
In a Kirby-Bauer susceptibility test, the presence of a zone of inhibition around disks containing antimicrobial agents indicates _____.
- a. that the microbe does not grow in the presence of the agents
- b. that the microbe grows well in the presence of the agents
- c. the smallest amount of the agent that will inhibit the growth of the microbe
- d. the minimum amount of an agent that kills the microbe in question
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Students have asked these similar questions
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 these
The first step for directly linking a microbe to a specific disease according to Koch's postulates is to
A.isolate microbes from the blood of healthy animals.
B. culture the blood or other body fluid from a diseased animal using nutrient medium.
C. inject a sample of blood or other body fluid from a diseased animal into a healthy animal.
D. obtain a sample of blood or other body fluid from a diseased animal.
Technically speaking, true antibiotics are drugs…
A. Produced naturally by microbes
B. Taken orally, not injected.
C. Used to treat any microbial infection
D. Used to treat any bacterial disease.
Chapter 10 Solutions
Microbiology: With Diseases By.. -Modern Access
Ch. 10 - Prob. 1TMWCh. 10 - Some antimicrobial drugs are harmful to humans....Ch. 10 - Antibiotic Overkill A young woman was taking...Ch. 10 - Prob. 3TMWCh. 10 - Why is it incorrect to say that an individual...Ch. 10 - Prob. 1EDCSCh. 10 - Prob. 2CCSCh. 10 - Prob. 1MCCh. 10 - In a Kirby-Bauer susceptibility test, the presence...Ch. 10 - Prob. 3MC
Ch. 10 - Prob. 4MCCh. 10 - Cross resistance is _____. a. the deactivation of...Ch. 10 - Prob. 6MCCh. 10 - Prob. 7MCCh. 10 - Prob. 8MCCh. 10 - Prob. 9MCCh. 10 - Prob. 10MCCh. 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 - Prob. 2SACh. 10 - Why is the fact that drug Z destroys the NAM...Ch. 10 - Given that both human cells and pathogens...Ch. 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 - How does Penicillium escape the effects of the...Ch. 10 - How might a colony of Bacillus licheniformis...Ch. 10 - Fewer than 1 % of known antibiotics have any...Ch. 10 - In an issue of News of the Lepidopterists Society,...Ch. 10 - Even though aminoglycosides such as gentamicin can...Ch. 10 - Prob. 7CTCh. 10 - Prob. 8CTCh. 10 - Why might amphotericin B affect the kidneys more...Ch. 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 - Prob. 1CM
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- 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 b. all choices are correct c. must be selectively toxic d. Must have a favorable chemotherapeutic indexarrow_forwardE-strip testing can be used to determine a drug MIC against an organism. Which ONE of the following is correct? Select one: A. The zone of inhibition is inversely proportional to the activity of the drug B. The E-strip result guides to the maximum drug concentration that can be used to clear an infection C. The E-strip is impregnated with a fixed concentration of drug D. The E-strip is used broadly clinically to determine if an organism is resistant to a drug E. The MIC is read where bacterial growth touches the E-striparrow_forwardChoose 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 microbicidalarrow_forward
- Increasing the tube voltage on a clinical x-ray unit: a. Improves the resolution of an x-ray image. b. Increases the intensity of the Characteristic x-rays. c. Increases the intensity of the Bremsstrahlung x-rays. d. Increases the energy of the Bremsstrahlung x-rays. e. Increases the energy of the Characteristic x-rays. and why??arrow_forwardWhich 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 carrow_forwardThe Kirby -Bauer antimicrobial sensitivity testing method relies on: A. The inhibition of one antimicrobial by another B. The diffusion of antimicrobials in paper discs C. Serial dilutions of antimicrobials in test tubes D. A gradient of an antimicrobial on a paper striparrow_forward
- Mass spectrometry identifies microbes via a. fluorescence of antibodies. b. precipitation reactions. c. protein fingerprints. d. fluorescence of antigens.arrow_forwardWhen determining the clinical significance of cultures, a. the number of microbes is signifi cant. b. the presence of a single colony of a true pathogen may indicate the presence of the disease if the culture comes from a site known to be sterile (i.e., cerebrospinal fl uid). c. the repeated isolation of a relatively pure culture of any microorganism can mean it is an agent of disease, although this is not always the case. d. a range of tests may be needed to identify a pathogen. e. all of the above are true.arrow_forwardWhich ONE of the following best describes the abbreviation ‘MIC’? Select one: A. The lowest concentration at which no microbial growth is detected B. The lowest concentration that indicates whether an antibiotic would be effective or not C. The lowest concentration which is not toxic to the host D. The lowest concentration which is least effective against the organism E. The lowest concentration which kills the organismarrow_forward
- A 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_forwarda.) Infection with this pathogen can result in a wide range of diseases from ear infections to meningitis. Group of answer choices Haemophilus influenzae Francisella tularensis Enterococcus faecalis Naegleria fowleri b.)As with all microbial control methods, the _______ the cells are exposed, the ______ damage accumulates. Group of answer choices longer, less shorter, more longer, more c.) Which of the following wavelengths would NOT be considered ultraviolet radiation? Group of answer choices 360 nm 200 nm 600 nm 25 nmarrow_forwardWhich type(s) of medium would be used in each scenario?a. isolating the growth of Streptococcus pyogenes from a patient’s throat swabb. isolating a pathogen from a patient’s clean-catch urine samplec. isolating enteric bacteria such as Escherichia coli from a sample oforganically grown spinach d. maintaining a patient’s nasal swab specimen for further analysis andidentifi cation of possible respiratory syncytial virus (RSV) infectionarrow_forward
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