Microbiology: An Introduction
11th Edition
ISBN: 9780321733603
Author: Gerard J. Tortora, Berdell R. Funke, Christine L. Case
Publisher: Benjamin Cummings
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Chapter 27, Problem 5MCQ
The water used to prepare intravenous solutions in a hospital contained endotoxins. Infection control personnel performed plate counts to find the source of the bacteria. Their results:
| Bacteria/100 ml | |
| Municipal water pipes | 0 |
| Boiler | 0 |
| Hot water line | 300 |
All of the following conclusions about the bacteria can be drawn except which one?
- a. They were present as a biofilm in the pipes.
- b. They are gram-negative.
- c. They come from fecal contamination.
- d. They come from the city water supply.
- e. none of the above
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Chapter 27 Solutions
Microbiology: An Introduction
Ch. 27 - The koala is a leaf-eating animal. What can you...Ch. 27 - Give one possible explanation of why Penicillium...Ch. 27 - In the sulfur cycle, microbes degrade organic...Ch. 27 - Why is the phosphorus cycle important?Ch. 27 - DRAW IT 5. Identify where the following processes...Ch. 27 - Prob. 6RCh. 27 - Outline the treatment process for drinking water.Ch. 27 - Prob. 8RCh. 27 - Bioremediation refers to the use of living...Ch. 27 - NAME IT 10. These nitrogen-fixing prokaryotes...
Ch. 27 - Prob. 1ACh. 27 - Explain the effect of dumping untreated sewage...Ch. 27 - Activated sludge system a. the process takes place...Ch. 27 - Prob. 2MCQCh. 27 - Nitrogen fixation a. the process takes place under...Ch. 27 - Prob. 4MCQCh. 27 - The water used to prepare intravenous solutions in...Ch. 27 - CO2+H2SLightLightC6H12O6+S0 a. aerobic respiration...Ch. 27 - Prob. 7MCQCh. 27 - CO2+8H++8eCH4+2H2O a. aerobic respiration b....Ch. 27 - Prob. 9MCQCh. 27 - Coliforms are used as indicator organisms of...Ch. 27 - Flooding after two weeks of heavy rainfall in...Ch. 27 - The bioremediation process shown in the photograph...
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- Write a paragraph for when you once have Neisseria gonorrhoea bacteria in its pure form, what methods can you use to confirm the identity of this bacterium as N. gonorrhoeae? Mention what is the principle of those methods.arrow_forwardA patient was admitted to the ER with severe virulent E. coli bacteremia and was given a high dose of intravenous ciprofloxacin antibiotic, to which the patient was not allergic. The patient develops fever and chills shortly afterward the administration of the antibiotic. Which of the following best describes the probable cause? Group of answer choices A. The Gram-negative E. coli released the endotoxin in the form of lipid A from the disintegrated lipopolysaccharides (LPS) upon death by the antibiotic leading to chills and fever. B. The Gram-negative E. coli released the endotoxin in the form of Protein A from the disintegrated lipopolysaccharides (LPS) upon death by the antibiotic leading to chills and fever. C. The Gram-positive E. coli released the endotoxin in the form of Protein A from the disintegrated lipopolysaccharides (LPS) upon death by the antibiotic leading to chills and fever. D. The Gram-positive E. coli released the endotoxin in the form of lipid A from the…arrow_forward(c) Public health scientists wanted to investigate the effect of ionising radiation on the growth of Salmonella typhimurium in the presence of antibiotics. They grew bacterial colonies of Salmonella typhimurium in petri dishes labelled A, B and C. The Petri dishes were kept at 36°C for 48 hours, with scientists observing the bacteria every 24 hours. The results for this investigation are below. Petri dish A B с Treatment Was subjected to ionising radiation followed immediately by a dose of antibiotic X An equal amount of antibiotic X was added (as was added to Petri dish A) Was given neither ionising radiation nor antibiotic X After 24 hours Small spots of growth on surface No growth Growth across whole surface After 48 hours (ii) Identify the purpose of petri dish C. Large spots of growth on surface No growth Growth across whole surface (i) Explain the effect of the ionising radiation on the bacteria. (iii) Explain why scientists must continue to develop new antibiotics.arrow_forward
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