Domanda del libro di testo
During chemical treatment of drinking water and wastewater, which of the following microbes is least likely to be inactivated or killed?
a. Algae
b. Viruses
c. Fungal spores
d. Bacteria
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Ch. 26 - Applied and Industrial Microbiology
Bauman6th EditionMicrobiology with Diseases by TaxonomyISBN: 9780134832302
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TOC.tableOfContents
- Ch. 1 - A Brief History of Microbiology31
- Ch. 2 - The Chemistry of Microbiology28
- Ch. 3 - Cell Structure and Function39
- Ch. 4 - Microscopy, Staining, and Classification25
- Ch. 5 - Microbial Metabolism51
- Ch. 6 - Microbial Nutrition and Growth37
- Ch. 7 - Microbial Genetics51
- Ch. 8 - Recombinant DNA Technology21
- Ch. 9 - Controlling Microbial Growth in the Environment36
- Ch. 10 - Controlling Microbial Growth in the Body: Antimicrobial Drugs21
- Ch. 11 - Characterizing and Classifying Prokaryotes29
- Ch. 12 - Characterizing and Classifying Eukaryotes34
- Ch. 13 - Characterizing and Classifying Viruses, Viroids, and Prions23
- Ch. 14 - Infection, Infectious Diseases, and Epidemiology35
- Ch. 15 - Innate Immunity34
- Ch. 16 - Adaptive Immunity21
- Ch. 17 - Immunization and Immune Testing29
- Ch. 18 - Immune Disorders22
- Ch. 19 - Pathogenic Gram-Positive Bacteria25
- Ch. 20 - Pathogenic Gram-Negative Cocci and Bacilli28
- Ch. 21 - Rickettsias, Chlamydias, Spirochetes, and Vibrios25
- Ch. 22 - Pathogenic Fungi47
- Ch. 23 - Parasitic Protozoa, Helminths, and Arthropod Vectors44
- Ch. 24 - Pathogenic DNA Viruses23
- Ch. 25 - Pathogenic RNA Viruses30
- Ch. 26 - Applied and Industrial Microbiology29
- Ch. 27 - Microbial Ecology and Microbiomes22
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Capitolo 26, Problema 6
The presence of _________in a water sample usually means pathogens have contaminated the source.
Guida verificata passo dopo passo1
Understand that the question is asking about an indicator organism or substance whose presence in water suggests contamination by pathogens.
Recall that in microbiology, certain bacteria are used as indicators of fecal contamination because they are commonly found in the intestines of warm-blooded animals and their presence suggests possible contamination by harmful microorganisms.
Identify that coliform bacteria, especially Escherichia coli (E. coli), are widely used as indicator organisms in water quality testing.
Recognize that the presence of coliform bacteria in a water sample usually means that pathogens have contaminated the source, as these bacteria indicate fecal contamination.
Therefore, the blank in the sentence should be filled with 'coliform bacteria' or simply 'coliforms' to correctly complete the statement.
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Indicator Organisms
Indicator organisms are microbes used to detect contamination in water, signaling the possible presence of pathogens. They are typically harmless bacteria whose presence suggests fecal contamination, making them useful for water quality testing.
Video consigliato:
05:22
Scientific Naming of Organisms
Fecal Contamination
Fecal contamination occurs when water is polluted with feces from humans or animals, introducing harmful microorganisms. This contamination is a major source of waterborne diseases and is often indicated by specific bacteria like coliforms.
Video consigliato:
04:29Filtration
Coliform Bacteria
Coliform bacteria are a group of rod-shaped bacteria commonly found in the intestines of warm-blooded animals. Their presence in water samples is a standard indicator of fecal contamination and potential pathogen presence.
Video consigliato:
06:18Introduction to Bacteria
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