Textbook Question
In which step is most of the organic content of sewage removed?
a. Primary treatment
b. Secondary treatment
c. Tertiary treatment
d. Sludge treatment
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Ch. 26 - Applied and Industrial Microbiology
Bauman6th EditionMicrobiology with Diseases by TaxonomyISBN: 9780134832302
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Table of contents
- 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
Bauman6th EditionMicrobiology with Diseases by TaxonomyISBN: 9780134832302Not the one you use?Change textbook
Chapter 26, Problem 8
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
Verified step by step guidance1
Understand the context: Chemical treatment of drinking water and wastewater aims to inactivate or kill harmful microorganisms to make the water safe for use.
Recall the general resistance of different microbes to chemical disinfectants: Viruses, bacteria, algae, and fungal spores vary in their susceptibility to chemical agents.
Consider that fungal spores are known for their tough, resistant structures that protect them from harsh environmental conditions, including chemical disinfectants.
Compare the resistance levels: Algae and bacteria are generally more susceptible to chemical treatments, while viruses can be quite resistant but usually less so than fungal spores.
Conclude that among the options, fungal spores are least likely to be inactivated or killed during chemical treatment due to their resistant nature.
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Key Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
Microbial Resistance to Chemical Disinfectants
Different microbes exhibit varying levels of resistance to chemical disinfectants used in water treatment. Factors such as cell structure, protective coatings, and metabolic state influence their susceptibility. Understanding which microbes are more resistant helps in selecting effective treatment methods.
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05:21
Types of Disinfectants
Characteristics of Fungal Spores
Fungal spores are reproductive units with thick walls that protect them from harsh environmental conditions, including chemical disinfectants. Their resilience makes them harder to inactivate compared to many bacteria and viruses, often requiring stronger or prolonged treatment.
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05:09Intro to Characteristics of Infectious Disease
Differences Between Microbial Groups (Algae, Viruses, Bacteria)
Algae are photosynthetic eukaryotes with cell walls, viruses are acellular particles requiring host cells, and bacteria are single-celled prokaryotes. These structural and biological differences affect their vulnerability to chemical treatments, with viruses often being more susceptible than spores or some algae.
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05:58Situations Warranting Different Levels of Microbial Growth Control
Related Practice
Textbook Question
________ and ________are the two types of food poisoning.
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Textbook Question
Which of the following is added during water or sewage treatment to promote flocculation?
a. Sludge
b. PHA
c. BOD
d. Alum
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Textbook Question
The presence of _________in a water sample usually means pathogens have contaminated the source.
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Textbook Question
A ________ is a device composed of microbes and electronics used to detect other microbes or their products.
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Textbook Question
Compounds that can be used for energy and are made by microbes are called ________.
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