Biology 2e
2nd Edition
ISBN: 9781947172517
Author: Matthew Douglas, Jung Choi, Mary Ann Clark
Publisher: OpenStax
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Textbook Question
Chapter 22, Problem 3VCQ
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.
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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.
In terms of the nitrogen cycle and movement of electrons, what is the difference between nitrogen fixation and assimilatory nitrate reduction
Which of the following is a process of the nitrogen cycle that involves the conversion of nitrogen gas to ammonia?
a.Nitrogen fixation
b.Nitrification
c.Ammonification
d.Denitrification
Chapter 22 Solutions
Biology 2e
Ch. 22 - Figure 22.8 Compared to free-floating bacteria,...Ch. 22 - Figure 22.16 Which of the following statements is...Ch. 22 - Figure 22.19 Which of the following statements...Ch. 22 - The first forms of life on Earth were thought to...Ch. 22 - Microbial mats. are the earliest forms of life on...Ch. 22 - The first organisms that oxygenated the atmosphere...Ch. 22 - Halophiles are organisms that require a salt...Ch. 22 - Many of the first prokaryotes to be cultured in a...Ch. 22 - The presence of a membrane-enclosed nucleus is a...Ch. 22 - Which of the following consist of prokaryotic...
Ch. 22 - The cell wall is ___________ . interior to the...Ch. 22 - Organisms most likely to be found in extreme...Ch. 22 - Prokaryotes stain as Gram-positive or Gramnegative...Ch. 22 - Pseudopeptidoglycan is a characteristic of the...Ch. 22 - The lipopolysaccharide layer (LPS) is a...Ch. 22 - Which of the following elements is not a...Ch. 22 - Prokaryotes that obtain their energy from chemical...Ch. 22 - Ammonification is the process by which. ammonia is...Ch. 22 - Plants use carbon dioxide from the air and are...Ch. 22 - Cyanobacteria harness energy from the sun through...Ch. 22 - A disease that is constantly present in a...Ch. 22 - Which of the statements about biofilms is...Ch. 22 - Which of these statements is true? An antibiotic...Ch. 22 - A person in England arrives at a medical clinic...Ch. 22 - MRSA has emerged as a serious infectious disease,...Ch. 22 - Which of these occurs through symbiotic nitrogen...Ch. 22 - Synthetic compounds found in an organism but not...Ch. 22 - Bioremediation includes. the use of prokaryotes...Ch. 22 - In addition to providing yogurt with its unique...Ch. 22 - Describe briefly how you would detect the presence...Ch. 22 - Why do scientists believe that the first organisms...Ch. 22 - A new bacterial species is discovered and...Ch. 22 - Mention three differences between bacteria and...Ch. 22 - Explain the statement that both types, bacteria...Ch. 22 - A scientist isolates a new species of prokaryote...Ch. 22 - Think about the conditions (temperature, light,...Ch. 22 - Farmers continually rotate the crops grown in...Ch. 22 - Imagine a region of soil became contaminated,...Ch. 22 - Explain the reason why the imprudent and excessive...Ch. 22 - Researchers have discovered that washing spinach...Ch. 22 - Your friend believes that prokaryotes are always...Ch. 22 - Many people use antimicrobial soap to kill...
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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.
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In the nitrogen cycle the Assimilation process is a metabolic reaction: anabolic, catabolic, endergonic, exergonic, heterotrophic or autotrophic.
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Why is the phosphorus cycle different from the nitrogen cycle
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Human activities alter the transfer rates of the nitrogen cycle, __________ the fixation rate.
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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.
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What product is generated by assimilation in the nitrogen cycle.
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Nitrogen fixation is the processa. that converts organic nitrogen to NH3.b. by which plants and animals take up NO3–.c. by which bacteria convert NO3– to N2.d. by which N2 is converted to NH3 or NH4+.e. All of the above are true of nitrogen fixation.
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what happens during the process of nitrogen fixation
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Why are bacteria required in the nitrogen cycle
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what are the key chemical transformation in the nitrogen cycle and which ones are affected by human influences
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Plant growth is limited by available nitrogen. Why is nitrogen fixation a limiting factor?
There is very little nitrogen available after fossil fuel combustion utilizes the available nitrogen.
Nitrogen must be produced by bacteria due to the inability of recycling by decomposers.
There is no nitrogen in the atmosphere; it is only found in aquatic biomes.
The stability of nitrogen gas makes it difficult to turn into nitrogen for living things.
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Regarding nitrogen fixation, are the following statements True or False?
a) Atmospheric nitrogen is reduced to the biologically useful form NH3 (or NH4 ).
b) Nitrogen fixation in nature and in the lab requires a metal cofactor or catalyst.
c) The availability of fixed nitrogen limits biological productivity.
d) Ammonium from the atmosphere is fixed to more usable forms of nitrogen, such as nitrite (NO2–).
e) Nitrogen fixation is energetically neutral, using a negligible amount of ATP.
f) The enzyme nitrogenase, which takes part in nitrogen fixation, is inactivated by oxygen.
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