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32) A) To improve human health with the help of living organisms such as bacteria B) To clean up areas polluted with toxic compounds by using bacteria C) To improve soil quality for plant growth by using bacteria D) To improve bacteria for production of useful chemicals E) To kill pathogenic bacteria with the use of antibiotics 33) An organic solvent widely used in industrial processes, 1,1,1-trichloroethane (TCA), is a major environmental pollutant affecting human health and damaging the ozone layer. Recently, researchers isolated the first bacteria able to degrade TCA. They found that the bacteria use hydrogen as an electron donor, TCA as an electron acceptor, and acetate as a carbon source. Based on the preceding information, deduce the method used to isolate these bacteria. A) Gram staining B) Enrichment culture C) Direct sequencing D) Seeding

32) A) To improve human health with the help of living organisms such as bacteria B) To clean up areas polluted with toxic compounds by using bacteria C) To improve soil quality for plant growth by using bacteria D) To improve bacteria for production of useful chemicals E) To kill pathogenic bacteria with the use of antibiotics 33) An organic solvent widely used in industrial processes, 1,1,1-trichloroethane (TCA), is a major environmental pollutant affecting human health and damaging the ozone layer. Recently, researchers isolated the first bacteria able to degrade TCA. They found that the bacteria use hydrogen as an electron donor, TCA as an electron acceptor, and acetate as a carbon source. Based on the preceding information, deduce the method used to isolate these bacteria. A) Gram staining B) Enrichment culture C) Direct sequencing D) Seeding

Human Anatomy & Physiology (11th Edition)
Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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**Educational Content: Bioremediation and Atmospheric Changes** **Question 32: What is the goal of bioremediation?** Bioremediation aims to utilize living organisms, primarily bacteria, to address environmental issues. The specific goals can include: A) Improving human health with the help of living organisms such as bacteria. B) Cleaning up areas polluted with toxic compounds by using bacteria. C) Enhancing soil quality for plant growth through bacterial application. D) Utilizing bacteria for the production of useful chemicals. E) Eliminating pathogenic bacteria using antibiotics. **Question 33: Bacteria Isolation for Environmental Cleanup** An organic solvent, 1,1,1-trichloroethane (TCA), prevalent in industrial processes, poses significant environmental and health risks, including ozone layer damage. Researchers have successfully isolated a type of bacteria capable of degrading TCA. The bacteria use hydrogen as an electron donor, TCA as an electron acceptor, and acetate as a carbon source. Based on this information, deduce the method used to isolate these bacteria: A) Gram staining B) Enrichment culture C) Direct sequencing D) Seeding **Question 34: Bacteria's Role in Atmospheric Change** Multicellularity and large body size in eukaryotic organisms necessitate high metabolic rates and efficient ATP production through aerobic respiration. The question addresses how bacteria altered Earth's atmosphere to support this: A) Oxygenic photosynthesis by cyanobacteria significantly increased the oxygen levels in the atmosphere. B) Water splitting during anaerobic respiration by cyanobacteria dramatically increased atmospheric oxygen. C) Nitrogen fixation by cyanobacteria reduced atmospheric nitrogen, leading to a simultaneous increase in oxygen levels. D) Anaerobic respiration by cyanobacteria raised oxygen levels by reducing iron oxides, which reacted with oxygen. This detailed exploration of microbial processes highlights their critical roles in environmental management and atmospheric evolution.
Transcribed Image Text:**Educational Content: Bioremediation and Atmospheric Changes** **Question 32: What is the goal of bioremediation?** Bioremediation aims to utilize living organisms, primarily bacteria, to address environmental issues. The specific goals can include: A) Improving human health with the help of living organisms such as bacteria. B) Cleaning up areas polluted with toxic compounds by using bacteria. C) Enhancing soil quality for plant growth through bacterial application. D) Utilizing bacteria for the production of useful chemicals. E) Eliminating pathogenic bacteria using antibiotics. **Question 33: Bacteria Isolation for Environmental Cleanup** An organic solvent, 1,1,1-trichloroethane (TCA), prevalent in industrial processes, poses significant environmental and health risks, including ozone layer damage. Researchers have successfully isolated a type of bacteria capable of degrading TCA. The bacteria use hydrogen as an electron donor, TCA as an electron acceptor, and acetate as a carbon source. Based on this information, deduce the method used to isolate these bacteria: A) Gram staining B) Enrichment culture C) Direct sequencing D) Seeding **Question 34: Bacteria's Role in Atmospheric Change** Multicellularity and large body size in eukaryotic organisms necessitate high metabolic rates and efficient ATP production through aerobic respiration. The question addresses how bacteria altered Earth's atmosphere to support this: A) Oxygenic photosynthesis by cyanobacteria significantly increased the oxygen levels in the atmosphere. B) Water splitting during anaerobic respiration by cyanobacteria dramatically increased atmospheric oxygen. C) Nitrogen fixation by cyanobacteria reduced atmospheric nitrogen, leading to a simultaneous increase in oxygen levels. D) Anaerobic respiration by cyanobacteria raised oxygen levels by reducing iron oxides, which reacted with oxygen. This detailed exploration of microbial processes highlights their critical roles in environmental management and atmospheric evolution.
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