Microbiology: An Introduction
11th Edition
ISBN: 9780321733603
Author: Gerard J. Tortora, Berdell R. Funke, Christine L. Case
Publisher: Benjamin Cummings
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Textbook Question
Chapter 6, Problem 8MCQ
Which of the following is not a characteristic of biofilms?
- a. antibiotic resistance
- b. hydrogel
- c. iron deficiency
- d. quorum sensing
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Which of the following is not true about biofilms
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Chapter 6 Solutions
Microbiology: An Introduction
Ch. 6 - Prob. 1RCh. 6 - Prob. 2RCh. 6 - Prob. 3RCh. 6 - Seven methods of measuring microbial growth were...Ch. 6 - By deep-freezing, bacteria can be stored without...Ch. 6 - A pastry chef accidentally inoculated a cream pie...Ch. 6 - Nitrogen and phosphorus added to beaches following...Ch. 6 - Differentiate complex and chemically defined...Ch. 6 - DRAW IT Draw the following growth curves for E....Ch. 6 - NAME IT A prokaryotic cell hitched a ride to Earth...
Ch. 6 - Two culture media were inoculated with four...Ch. 6 - Two culture media were inoculated with four...Ch. 6 - Use the following graph to answer questions 3 and...Ch. 6 - Use the following graph to answer questions 3 and...Ch. 6 - Assume you inoculated 100 facultatively anaerobic...Ch. 6 - The term trace elements refers to a. the elements...Ch. 6 - Which one of the following temperatures would most...Ch. 6 - Which of the following is not a characteristic of...Ch. 6 - Which of the following types of media would not be...Ch. 6 - An organism that has peroxidase and superoxide...Ch. 6 - E. coli was incubated with aeration in a nutrient...Ch. 6 - Clostridium and Streptococcus are both...Ch. 6 - Most laboratory media contain a fermentable...Ch. 6 - Flask A contains yeast cells in glucose-minimal...Ch. 6 - Clinical Applications and Evaluation 1. Assume...Ch. 6 - Heat lamps are commonly used to maintain foods at...Ch. 6 - The number of bacteria in saliva samples was...
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- Bacteria that thrive in puncture wounds are likely to be (a) aerobes (b) photoautotrophs (c) chemoautotrophs (d) endospores (e) obligate anaerobesarrow_forwardWhat is the difference in microbial population from water sediment and neustonic source? A. Ratio of phototrophic and heterotrophic microbes. B. Ratio of anaerobic microbes to aerobic microbes. C. Ratio of heterotrophic and cellulolytic microbes. D. All statements are acceptable descriptions.arrow_forwardWhich microbe is NOT found present in water with eutrophication events(s)? A. Nitromonas sp. B. Bacteroides sp. C. Anabaena sp. D. Cyanobacteriaarrow_forward
- Which of the following is true of microbial biofilms? A. Biofilms are restricted to freshwater environments. B. Biofilms typically are small because resources such as nutrients and oxygen are unable to circulate through them. C. Cells within the biofilm are encased within a layer of polysaccharide. D. Biofilms almost always consist of only a single bacterial speciesarrow_forwardA fastidious organism must be grown on what type of medium? a. general-purpose medium c. synthetic medium b. differential medium d. enriched mediumarrow_forwardOn what basis were both Shigella and Salmonella eliminated aspossible causes of the outbreak pathogen?a. Gram reaction b. fermentation of glucose c. oxidase results d. motilityarrow_forward
- Microorganisms that require carbon dioxide for growth are called: * A)Psychrophiles B)Capnophiles C)halophiles D)Mesophilesarrow_forwardBacteria capable of growing on minimal media are considered which of the following? a. auxotrophs b. mediatrophs c. prototrophs d. autotrophs e. allotrophsarrow_forwardGive the name of 10 places where biofilms can be found.arrow_forward
- How do you observe growth in liquid microbiological media? a) the medium is cloudy or turbid b) colonies appear on the surface of the medium c) the medium becomes solid d) colonies appear distributes throughout the mediumarrow_forwardDiseases that involve biofilm-producing bacteria are serious concern. They are not easily treated compared with those involving free-floating bacteria. Explain three reasons why biofilm formers are more pathogenic.arrow_forwardList three (3) advantages microbes have when living in a biofilm, as compared to planktonic growth. Then explain how each biofilm advantage impacts human health.arrow_forward
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