Which of the following is an example of bioremediation? using a bulldozer to regrade a strip mine reconfiguring the channel of a river adding seeds of a chromium-accumulating plant to soil contaminated by chromium adding nitrogen-fixing microorganisms to a degraded ecosystem to increase nitrogen availability

Which of the following is an example of bioremediation? using a bulldozer to regrade a strip mine reconfiguring the channel of a river adding seeds of a chromium-accumulating plant to soil contaminated by chromium adding nitrogen-fixing microorganisms to a degraded ecosystem to increase nitrogen availability

Biology 2e

2nd Edition

ISBN:9781947172517

Author:Matthew Douglas, Jung Choi, Mary Ann Clark

Publisher:Matthew Douglas, Jung Choi, Mary Ann Clark

Chapter46: Ecosystems

Section: Chapter Questions

Problem 3VCQ: Figure 46.17 Which of the following statements about the nitrogen cycle is false? Ammonification...

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When a salmon carcass rots in a riparian forest and the nitrogen is released into the environment, it contributes to this flux in the nitrogen cycle: mineralization denitrification nitrogen immobilization Onitrogen fixation nitrification
Which of the following statements is not true about bioremediation and biodegradation? Microbes played a critical role in metabolizing the crude oil in the Deepwater Horizon spill in the Gulf of Mexico. Oil-degrading microbes have enzymes that use molecules in the oil as substrates. Phosphorus and nitrogen stimulate the growth of oil-degrading microbes. dding easily metabolized organic matter such as glucose increases biodegradation. The biodegradation of plastics is fast because of their chemical structure and properties.
Which nitrogen flux is incorrectly described? O nitrification is the conversion of ammonium to nitrates nitrogen mineralization is the conversion of organic nitrogen to inorganic nitrogen nitrogen immo bilization is the conversion of ammonium to metamorphic rock O denitrification is the conversion of nitrate to nitrogen gas O nitrogen fixation is the conversion of nitrogen gas to bioavailable forms of nitrogen
Which of the following best describes how using fertilizer would affect the nitrogen cycle? The use of fertilizer would result in more nitrogen in the groundwater. The use of fertilizer would result in less nitrogen in the soil. The use of fertilizer would result in more phosphorus in the soil. The use of fertilizer would result in more nitrogen being added to the carbon cycle.
N Cylcle: Match the steps of the Nitrogen Cycle you would find beneficial based on the professions/goals listed below Farmer wishes to increase vegetable [Choose] production [Choose ] Farmer wishes to decrease runoff of nitrate containing fertilizers in irrigation water denitrification nitrogen fixation and nitrification sewage plant operator wishing to decrease frequeny of HAB's from treated sewage dumped into Sacramento River [ Choose ] water quality consultant working with public who are using many nitrate containing fertilizers; consultant wishes to increase water quality and clarity in Lake Tahoe, [ Choose ]
Figure 20.12 Which of the following statements about the nitrogen cycle is false? a. Ammonification converts organic nitrogenous matter from living organisms into ammonium (NH4+) . b. Denitrification by bacteria converts nitrates (NO3) to nitrogen gas (N2) . c. Nitrification by bacteria converts nitrates (NO3) to nitrites (NO2) . d. Nitrogen fixing bacteria convert nitrogen gas (N2) into organic compounds.
Figure 22.19 Which of the following statements about the nitrogen cycle is false? Nitrogen fixing bacteria exist on the root nodules of legumes and in the soil. Denitrifying bacteria convert nitrates (NO3 ) into nitrogen gas (N2). Ammonification is the process by which ammonium ion (NH4+) is released from decomposing organic compounds. Nitrification is the process by which nitrites (NO2-) are converted to ammonium ion (NH4+).
Figure 46.17 Which of the following statements about the nitrogen cycle is false? Ammonification converts organic nitrogenous matter from living organisms into ammonium (NH4+). Denitrification by bacteria converts nitrates (NO3-) to nitrogen gas (N2). Nitrification by bacteria converts nitrates (NO3) to nitrites (NO2-). Nitrogen fixing bacteria convert nitrogen gas (N2) into organic compounds.
In terms of the nitrogen cycle and movement of electrons, what is the difference between nitrogen fixation and assimilatory nitrate reduction
Describe the process of nitrogen fixation and explain its ecologicimportance
Soil microorganisms, collectively referred to as dizotrophs, fix 90% of the inert nitrogen gas to ammonium and nitrate. There are two-main types of nitrogen-fixing bacteria: free-living (nonsymbiotic) and mutualistic (symbiotic). Describe the mutualistic relationship between Rhizobium and legumes. What is the advantage of using legumes as a cover crop in agricultural systems? A point of interest is that the nitrogenase enzyme complex is highly sensitive to oxygen. This is a major problem for free-living aerobic species such as cyanobacteria and species of the genera Azotobacter and Beiigrinckia. Describe two ways the bacteria can overcome to levels of oxygen in their cells.
All of the following choices are autotrophic organisms, EXCEPT for Select the correct response: The Titan Arum "Methusalah" - Bristlecone Pine The Corpse Flower "Hyperion" - Redwood