Campbell Biology in Focus (2nd Edition)
2nd Edition
ISBN: 9780321962751
Author: Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Jane B. Reece
Publisher: PEARSON
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Chapter 42, Problem 4TYU
Summary Introduction
Introduction:
The bacteria fixing the nitrogen content for the availability of plants are called nitrogen fixing bacteria. The inorganic nitrogen or atmospheric nitrogen is converted into organic nitrogen for the easy absorption by plants.
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Some bacteria have the ability to “fix” nitrogen. This means
a. they convert ammonia into nitrites and nitrates.
b. they convert atmospheric nitrogen gas into biologically useful forms of nitrogen.
c. they break down nitrogen-rich compounds and release ammonium ions.
d. they convert nitrate into nitrogen gas.
Nitrification”is the conversion of:a.carbon compounds to nitrogen compounds.b.nitrogen gas (N2) to ammonia (NH2).c.ammonium (NH4+) to nitrate (NO3-).d.ammonia (NH3) to nitrogen gas (N2).e.ammonium (NH4+) to nitrite (NO2-).
Which of the following processes is/are used to fix atmospheric N2?
a.bacterial action
b.Haber process
c.lightning
d.transamination
Chapter 42 Solutions
Campbell Biology in Focus (2nd Edition)
Ch. 42.1 - Why is the transfer of energy in an ecosystem...Ch. 42.1 - WHAT IF? You are studying nitrogen cycling on the...Ch. 42.1 - MAKE CONNECTIONS Use the second law of...Ch. 42.2 - Why is only a small portion of the solar energy...Ch. 42.2 - How can ecologists experimentally determine the...Ch. 42.2 - Prob. 3CCCh. 42.3 - If an insect that eats plant seeds containing 100...Ch. 42.3 - Tobacco leaves contain nicotine, a poisonous...Ch. 42.3 - WHAT IF? Detritivores are consumers that obtain...Ch. 42.4 - Prob. 1CC
Ch. 42.4 - Prob. 2CCCh. 42.4 - Prob. 3CCCh. 42.5 - Prob. 1CCCh. 42.5 - How do bioremediation and biological augmentation...Ch. 42.5 - Prob. 3CCCh. 42 - Prob. 1TYUCh. 42 - Which of these ecosystems has the lowest net...Ch. 42 - Prob. 3TYUCh. 42 - Prob. 4TYUCh. 42 - Which of the following has the greatest effect on...Ch. 42 - Prob. 6TYUCh. 42 - Prob. 7TYUCh. 42 - Prob. 8TYUCh. 42 - INTERPRET THE DATA Draw a simplified global water...Ch. 42 - SCIENTIFIC INQUIRY Using two neighboring ponds in...Ch. 42 - Prob. 11TYUCh. 42 - FOCUS ON ENERGY AND MATIER Decomposition typically...Ch. 42 - Prob. 13TYU
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- ... Bacteria that grew in the bottom of nutrient broth tube is: a. Anaerobic A b. Flocculent c. Pellicle d. Sediment Reply...arrow_forwardWhich of the following organisms improves nitrogen status in legumes? Select one: a. Nitrate reductase b. Rhizobium c. Glutathione d. Mycorrhizae e. Pseudomonasarrow_forwardWhich form of Nitrogen is not available for organism growth represents which of these below?a. NH4+b. NO3-c. N2d. all of these3arrow_forward
- a.Briefly describe the roles of Rhizobium, Nitrosomonas, Nitrobacter and Pseudomonasbacteria in the nitrogen cycle (about 200 words). b. Provide one example for each of the following from the sulfur cycle: a biotic flux a natural abiotic flux an anthropogenic flux..arrow_forwardNitrogen 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.arrow_forwardWhat genus of bacteria transforms ammonia to nitrite in the Nitrogen cycle? A. Nitrobacter B. Nitrosomonas C. detritus D. Legumesarrow_forward
- Use of synthetic fertilizers often leads to the contamination of groundwater with nitrates. Nitrate pollution is also a suspected cause of anoxic "dead zones" in the ocean. Which of the following processes is most likely to help reduce nitrate pollution? A. adding methanogens to the soil B. adding nitrifying bacteria to the soil C. adding denitrifying bacteria to the soil D. using ammonia instead of nitrate as a fertilizerarrow_forwardFigure 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_forwardNitrogen fixation is the conversion of Select one: a. N2 to NH3 b. N2 to urea C. N2 to N d. N2 to NO3arrow_forward
- This trace element is essential and required at the lowest levels in plants, and therefore deficiencies are very uncommon. It is involved in nitrogen assimilation. Select one: a. Mo b. Ni c. P d. Mg e. Narrow_forwardWhat microbes is highest in agricultural lands? A. Aerobic nitrogen fixing bacteria B. Anaerobic nitrogen fixing bacteria C. Aerobic heterotrophic bacteria D. Anaerobic heterotrophic bacteriarrow_forwardExplain the consequences to the nitrogen gas in the atmosphere if all the nitrogen- fixation prokrayotes would die suddenly.arrow_forward
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