BIOLOGY
5th Edition
ISBN: 9781265202859
Author: BROOKER
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Chapter 59, Problem 5TY
Summary Introduction
Introduction: The nitrogen cycle is an important biogeochemical cycle which comprises five major parts. The five major parts of the nitrogen cycle are nitrogen fixation, nitrification, assimilation, ammonification, and denitrification.
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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
Which statement offers the best explanation of how deforesting hubbard brooks watershed (W2) affected the nitrogen cycle?
1. Denitrification rates increased, resulting in a decrease in the export of ammonium
2. Microbial immobilization rates increased, resulting in a decline in stream nitrogen
3. Mineralization rates increased, causing the export of ammonium to increase
4. plant uptake nitrogen stopped, resulting in an increase in the export of nitrate
Define the following terms:a. nitrogen fixationb. nitrogenasec. nitrogen assimilationd. amino acid poole. nitrogen cycle
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- What microbes is highest in agricultural lands? A. Aerobic nitrogen fixing bacteria B. Anaerobic nitrogen fixing bacteria C. Aerobic heterotrophic bacteria D. Anaerobic heterotrophic bacteriarrow_forwardWhich of the following processes is/are used to fix atmospheric N2? a.bacterial action b.Haber process c.lightning d.transaminationarrow_forwardGive the importance of the a) water cycle b) nitrogen cyclearrow_forward
- fertilizers are necessary if the soil lacks one of the following nutrients: a. calcium, carbon, potassium b. nitrogen phosphorus, potassium c. nitrogen, phosphorus, magnesium d. nitrogen, calcium, magnesium e. phosphorus, potassium, magnesiumarrow_forwardWhich of the following is NOT the usual mechanism of transport of atmospheric microbes? A. Gravimetric deposition B. Wind updraft C. Precipitation D. Evaporationarrow_forwardBelow you are provided with two scenarios of how excess nutrients can enter water systems. For each scenario, water must begin in the atmosphere, as a gas. Using a minimum of 3 stages of the water cycle, complete the process to illustrate each of the scenarios. It is recommended to write the steps out chronologically as well. 1. How do fertilizers or pesticides placed on farmland infiltrate the soil and the aquifer, in relation to the water cycle? 2. Heavy rainfall has the ability to move fertilizers and surface pollutants to other areas, such as the Ocean. Diagram this process using a minimum of 3 water cycle stages, beginning in the atmosphere.arrow_forward
- When the sulfur dioxide released from burning fossil fuels reacts with water vapor in clouds, sulfuric acid forms. a. Is sulfuric acid a primary or secondary pollutant? b. Is the pollution in this example point or non-point? C.Is the pollution in this example acute or chronic?arrow_forwardAnswer the following: a. What is a nutrient cycle? b. What are the different types of nutrient cycles, and describe each briefly. c. What is the importance of the different nutrient cycles on Earth?arrow_forwardNitrogen is available to terrestrial plants in the form of Select all that apply. Select one or more: a. nitrite ions in the soil b. nitrate ions in the soil c. animal carcasses d. N2 in the atmosphere e. ammonium ions in the soilarrow_forward
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