Biology 2e
2nd Edition
ISBN: 9781947172517
Author: Matthew Douglas, Jung Choi, Mary Ann Clark
Publisher: OpenStax
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Textbook Question
Chapter 46, Problem 3VCQ
Figure 46.17 Which of the following statements about the nitrogen cycle is false?
- Ammonification converts organic nitrogenous matter from living organisms into ammonium (NH 4 +).
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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
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
In the nitrogen cycle the Assimilation process is a metabolic reaction: anabolic, catabolic, endergonic, exergonic, heterotrophic or autotrophic.
Chapter 46 Solutions
Biology 2e
Ch. 46 - Figure 46.8 Why do you think the value for gross...Ch. 46 - Figure 46.10 Pyramids depicting the number of...Ch. 46 - Figure 46.17 Which of the following statements...Ch. 46 - The ability of an ecosystem to return to its...Ch. 46 - A re-created ecosystem in a laboratory environment...Ch. 46 - Decomposers are associated with which class of...Ch. 46 - The primary producers in an ocean grazing food web...Ch. 46 - What term describes the use of mathematical...Ch. 46 - The position of an organism along a food chain is...Ch. 46 - The loss of an apex consumer would impact which...
Ch. 46 - A food chain would be a better resource than a...Ch. 46 - The weight of living organisms in an ecosystem at...Ch. 46 - Which term describes the process whereby toxic...Ch. 46 - Organisms that can make their own food using...Ch. 46 - In the English Channel ecosystem, the number of...Ch. 46 - What law of chemistry determines how much energy...Ch. 46 - The mussels that live at the NW Eifuku volcano are...Ch. 46 - The movement of mineral nutrients through...Ch. 46 - Carbon is present in the atmosphere as ________...Ch. 46 - The majority of water found on Earth is: ice water...Ch. 46 - The average time a molecule spends in its...Ch. 46 - The process whereby oxygen is depleted by the...Ch. 46 - The process whereby nitrogen is brought into...Ch. 46 - Which of the following approaches would be the...Ch. 46 - How would loss of fungi in a forest effect...Ch. 46 - Compare and contrast food chains and food webs....Ch. 46 - Describe freshwater, ocean, and terrestrial...Ch. 46 - Compare grazing and detrital food webs. Why would...Ch. 46 - How does the microcosm modeling approach differ...Ch. 46 - How do conceptual and analytical models of...Ch. 46 - Compare the three types of ecological pyramids and...Ch. 46 - How does the amount of food a warm-blooded animal...Ch. 46 - A study uses an inverted pyramid to demonstrate...Ch. 46 - Describe what a pyramid of numbers would like if...Ch. 46 - Describe nitrogen fixation and why it is important...Ch. 46 - What are the factors that cause dead zones?...Ch. 46 - Why are drinking water supplies still a major...Ch. 46 - Discuss how the human disruption of the carbon...
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- 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+).arrow_forwardFigure 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.arrow_forwardThe following carbon sources can be used for nutrition, by at least some heterotrophic organisms, except: CH3COOH CH3OH CO2 CH4 HCOOHarrow_forward
- In terms of the nitrogen cycle and movement of electrons, what is the difference between nitrogen fixation and assimilatory nitrate reductionarrow_forwardAll of the following carbon sources can be used for nutrition, by at least some exclusively heterotrophic organisms, with the exception of: CH3CH2OH CO2 HCOOH CH4 CH3COOHarrow_forwardwhat are the key chemical transformation in the nitrogen cycle and which ones are affected by human influencesarrow_forward
- Nitrogen-fixing bacteria reduce ammonia (ammonium ion) to nitrogen gas. Group of answer choices True Falsearrow_forwardNitrogen fixation and nitrate assimilation are the only ways biological systems can incorporate nitrogen into organic molecules. O True O Falsearrow_forwardThe majority of the nitrogen on earth can be found in which of the following reservoirsarrow_forward
- Why are bacteria required in the nitrogen cyclearrow_forwardWhat product is generated by assimilation in the nitrogen cycle.arrow_forwardWhat is a potential role of methanogens in global warming? Methanogens produce methane, which traps more heat than carbon dioxide and may contribute to global warming. Methanogens convert carbon dioxide into methane, removing carbon dioxide from the atmosphere and effectively decreasing global warming. The methane that methanogens produce during sludge digestion of wastewater treatment is burned so that it does not contribute to global warning. Methanogens convert methane gas produced by organic waste into carbon dioxide, decreasing global warming.arrow_forward
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