MICROBIOLOGY W/ACCESS PKG >IP<
12th Edition
ISBN: 9781323592427
Author: Tortora
Publisher: PEARSON C
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Chapter 27, Problem 10MCQ
Coliforms are used as indicator organisms of sewage pollution because
- a. they are pathogens.
- b. they ferment lactose.
- c. they are abundant in human intestines.
- d. they grow within 48 hours.
- e. all of the above
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Chapter 27 Solutions
MICROBIOLOGY W/ACCESS PKG >IP<
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 - 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 - Prob. 1ACh. 27 - Explain the effect of dumping untreated sewage...Ch. 27 - Flooding after two weeks of heavy rainfall in...Ch. 27 - The bioremediation process shown in the photograph...
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- Coliform bacteria are common contaminants of meats.a. Why might one expect to find coliforms in samples of meat? b. High coliform counts in food indicate the potential for finding which intestinal pathogens? c.In terms of food safety, why is it suggested to cook hamburgers medium-well to well-done, whereas steaks can be cooked rare?arrow_forwardWhat are the results of the TSI from the enteric bacteria P. vulgaris? A. Black butt, yellow slant, glucose, lactose and/or sucrose fermented, H2S produced B. Black butt, red slant, glucose fermented, no gas C. Yellow butt, yellow slant, split agar, glucose, lactose and/ or sucrose fermented, gas produced D. Yellow butt, red slant, glucose only fermented, no gasarrow_forwardWhich of the following bacteria would be the most accurate indicatorof fecal contamination?a. Enterobacter aerogenes b. Thiobacillus acidophilus c. Escherichia coli d. Staphylococcus aureusarrow_forward
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- Which of the following microorganisms are not derivedfrom human pollution but can be found in water supply systemsand are considered “nuisance” organisms?(a) Coliform bacteria (d) Thiobacillus(b) Rhizobium (e) Clostridium(c) Azotobacterarrow_forwardRaw poultry can carry Salmonella or Campylobacter bacteria, both of which produce toxins that can cause serious diarrhea, among other symptoms. Aside from the discomfort, why does such an infection require immediate medical attention?arrow_forwardThese bacteria ferment sugars, produce lactate, and are used for some food production. a. Bacillus b. spirochetes c. cyanobacteria d. Agrobacterium e. Lactobacillusarrow_forward
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