Which of the following statement is INCORRECT? A. Bacteria can decompose organic nitrogen. B. Biological nitrogen fixation is carried out by bacteria. C. Ammonia, ammonium ion and nitrate ion are examples of biological available nitrogen. D. Denitrifying bacteria converts atmospheric dinitrogen gas into nitrate ion. E. Nitrification is the process of converting reactive nitrogen into another form of reactive nitrogen.

Which of the following statement is INCORRECT? A. Bacteria can decompose organic nitrogen. B. Biological nitrogen fixation is carried out by bacteria. C. Ammonia, ammonium ion and nitrate ion are examples of biological available nitrogen. D. Denitrifying bacteria converts atmospheric dinitrogen gas into nitrate ion. E. Nitrification is the process of converting reactive nitrogen into another form of reactive nitrogen.

Concepts of Biology

1st Edition

ISBN:9781938168116

Author:Samantha Fowler, Rebecca Roush, James Wise

Publisher:Samantha Fowler, Rebecca Roush, James Wise

Chapter20: Ecosystems And The Biosphere

Section: Chapter Questions

Problem 1ACQ: Figure 20.12 Which of the following statements about the nitrogen cycle is false? a. Ammonification...

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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.
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.
Which of the following processes is/are used to fix atmospheric N2? a.bacterial action b.Haber process c.lightning d.transamination
What process brings nitrogen from the atmosphere into living system? A. Methanogenesis B. Denitrification C. Anammox D. Nitrogen fixation E. Nitrification
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
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.
The process whereby nitrogen is brought into organic molecules is called ________. a. nitrification b. denitrification c. nitrogen fixation d. nitrogen cycling
Which essential chemical must be “fixed” by soil-dwelling bacteria before it can enter the food chain? a. Carbon b. Nitrogen c. Phosphorous d. Both a. and b.
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 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+).
The conversion of ammonia to nitrate, known as _______________, is a two-step process performed by soil bacteria. (a) nitrogen fixation (b) nitrification (c) assimilation (d) ammonification (e) denitrification