Podcast
Questions and Answers
What is the mean score for graduate students?
What is the mean score for graduate students?
The range of grades for undergraduate students goes from 36% to 98%.
The range of grades for undergraduate students goes from 36% to 98%.
True
Define biodegradation.
Define biodegradation.
The process by which microorganisms break down organic substances.
The mean score for undergraduate students is _____%.
The mean score for undergraduate students is _____%.
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Match the following grade distributions with their respective student groups:
Match the following grade distributions with their respective student groups:
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Which grade did not have any students in the graduate category?
Which grade did not have any students in the graduate category?
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More undergraduate students scored an A than graduate students.
More undergraduate students scored an A than graduate students.
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What is the highest grade achieved by graduate students?
What is the highest grade achieved by graduate students?
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What is the role of a microbial food source in biodegradation?
What is the role of a microbial food source in biodegradation?
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Biodegradation of organic contaminants can only occur in aerobic environments.
Biodegradation of organic contaminants can only occur in aerobic environments.
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What is the main difference between aerobic and anaerobic degradation?
What is the main difference between aerobic and anaerobic degradation?
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The process of breaking down organic contaminants by microbial activity is called __________.
The process of breaking down organic contaminants by microbial activity is called __________.
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Match the following terms with their descriptions:
Match the following terms with their descriptions:
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Study Notes
Microorganisms & Organic Pollutants
- Chapter 17, 11/18/2024
- Exam 2 results show Graduate student mean score is 94% (range 102-84%) and undergraduate student mean is 67% (range 98-36%).
Current Grades
- Graduate student performance: A: 9, B: 7, C: 3, D: 1, F: 0
- Undergraduate student performance: A: 2, B: 6, C: 4, D: 7, F: 3
What is Biodegradation?
- The breakdown of organic contaminants via microbial activity.
- Pollutants are considered microbial "substrates."
- Biodegradation is a series of steps leading to oxidation of the parent compound.
Mineralization of Organic Compounds
- Mineralization occurs via aerobic or anaerobic processes.
- The difference is the "terminal electron acceptor" (oxygen or other).
- Examples show needed ingredients for degradation (microbes, carbon source, nitrogen source, etc.).
Which Class of Hydrocarbons Breaks Down More Readily?
- Petroleum contains both aromatics and aliphatics.
- Aromatic compounds (benzene, naphthalene, phenanthrene) are sometimes more easily degraded than aliphatics.
- Aliphatic compounds (propane, hexane, hexatriacontane) vary in degradation rates depending on structure.
At-home Assignment
- Read article on Canvas about bioremediation of organic pollutants from wastewater.
- Answer questions/prompts.
- Due 11/25 by 11:59pm.
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Description
Dive into Chapter 17, focusing on how microorganisms interact with organic pollutants. This quiz covers biodegradation processes, mineralization, and the effectiveness of various hydrocarbons. Test your understanding of microbial roles in environmental science.
