Biology (MindTap Course List)
11th Edition
ISBN: 9781337392938
Author: Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg
Publisher: Cengage Learning
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Chapter 55, Problem 7TYU
Test Your Understanding
7. 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
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Nitrifying bacteria participate in the nitrogen cycle mainly by(A) converting nitrogen gas to ammonia.(B) releasing ammonium from organic compounds, thusreturning it to the soil.(C) converting ammonium to nitrate, which plants absorb.(D) incorporating nitrogen into amino acids and organiccompounds
Atmospheric Nitrogen (N,)
Plants
Assimilation
Denitrifyng
Bacteria
Nitrogen-fixing
bacteria living in
legume root nodules
Nitrates (NO, )
Decomposers
(aerobic and anaerobic
bacteria and fungi)
Nitrifying
bacteria
Ammonification
Nitrification
Ammonium
(NH,)
Nitrites (NO, )
Nitrogen-fixing
soil bacteria
Nitrifying bacteria
1. What is the name of this cycle?
2. Why isn't ammonium absorbed directly by green plants?
3. Describe the role of nitrates in this nitrogen cycle?
The bacteria which oxidize various inorganic substancesand use the released energy for the synthesis of food arecalled _______________.(a) Archaebacteria(b) Heterotrophic bacteria(c) Photosynthetic autotrophic bacteria(d) Chemosynthetic autotrophic bacteria
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Chapter 55 Solutions
Biology (MindTap Course List)
Ch. 55.1 - Summarize the concept of energy flow through a...Ch. 55.1 - Explain typical pyramids of numbers, biomass, and...Ch. 55.1 - Distinguish between gross primary productivity and...Ch. 55.1 - VISUALIZE Draw a diagram tracing energy flow...Ch. 55.1 - What are trophic levels, and how are they related...Ch. 55.1 - How do gross primary productivity (GPP) and net...Ch. 55.2 - Describe the main steps in each of these...Ch. 55.2 - What are the roles of the following processes in...Ch. 55.2 - VISUALIZE Draw a diagram showing the five steps in...Ch. 55.2 - How does the phosphorus cycle proceed without a...
Ch. 55.3 - Summarize the effects of solar energy on Earths...Ch. 55.3 - Discuss the roles of solar energy and the Coriolis...Ch. 55.3 - Give two causes of regional precipitation...Ch. 55.3 - Discuss the effects of fire on certain ecosystems.Ch. 55.3 - What basic forces determine the circulation of the...Ch. 55.3 - What basic forces produce the main ocean currents?Ch. 55.3 - Prob. 3CCh. 55.4 - Briefly describe some of the long-term ecological...Ch. 55.4 - Prob. 1CCh. 55 - The movement of matter is _______________ in...Ch. 55 - A complex of interconnected food chains in an...Ch. 55 - The quantitative estimate of the total amount of...Ch. 55 - Which of the following equations shows the...Ch. 55 - Which of the following processes increase(s) the...Ch. 55 - In the nitrogen cycle, gaseous nitrogen is...Ch. 55 - Test Your Understanding 7. The conversion of...Ch. 55 - Which biogeochemical cycle does not have a gaseous...Ch. 55 - Test Your Understanding 9. Which of the following...Ch. 55 - Test Your Understanding 10 The periodic warming of...Ch. 55 - Test Your Understanding 11 A mountain range may...Ch. 55 - VISUALIZE Draw the simplest stable ecosystem you...Ch. 55 - PREDICT How might a food web change if all...Ch. 55 - Why is the cycling of matter essential to the...Ch. 55 - What would happen to the nitrogen cycle if all...Ch. 55 - Test Your Understanding 16 Would the microclimate...Ch. 55 - Test Your Understanding 17 INTERPRET DATA Examine...Ch. 55 - INTERTRET DATA Scientists have compiled databases...Ch. 55 - SCIENCE, TECHNOLOGY, AND SOCIETY How do humans...
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- Test Your Understanding 9. Which of the following processes is not directly involved in the hydrologic cycle? (a) transpiration (b) evaporation (c) precipitation (d) nitrification (e) condensationarrow_forward5. The following Figure for Question 5 shows a simplified Nitrogen Cycle driven entirely by microorganisms. (i) : (ii) : (iii) : (iv) : N₂ (V) : N₂O iv NO NH3 NO₂ (a) Name the five major nitrogen transformation processes numbered (i) to (v) in the simplified Nitrogen Cycle. ii iii NO₂ The figure for Question 5 Organic Nitrogenarrow_forwardNitrification”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-).arrow_forward
- The form of nitrogen that is most usable in plants is:(a) Nitrate(b) Nitrite(c) Molecular nitrogen(d) Ammonia(e) Ammonium ionsarrow_forwardWhich of the following is not true about photoautotrophs?(a) They require CO2 and light.(b) They synthesize organic molecules from inorganicmolecules.(c) They are a subdivision of heterotrophs.(d) They are a subdivision of autotrophs.(e) All the above are true.arrow_forwardWhich of the following require organic carbon for their metabolism (circle all that apply) (a) Aerobic heterotrophs (b) Nitrifiers (c) Denitrifiersarrow_forward
- Illuminate ← → X OB x MNPS_Q1_Science_Biology_2022-2023 K follow. Question 10 V ▶ Q Zoom The Nitrogen Cycle Atmospheric nitrogen (N₂) Decomposers ©2022 Illuminate Education TM, Inc. Ammonium (NH4) Atmospheric nitrogen fixation w Nitrates (NO3-) Denitrification 200 -Nitrites (NO2-) Question 10 How does a plant take in nitrogen? O A OB DELL C D Accessibility Tools Signed in as: Zavion Malik Q Review/✔ Finish Test ABG C x A plant takes in nitrogen as nitrites (NO₂) that are received directly from other plants. A plant takes in nitrogen as nitrates (NO3) after nitrogen has been transformed by bacteria. P A plant takes in nitrogen as atmospheric nitrogen (N₂) captured directly from the atmosphere. A plant takes in nitrogen as ammonium (NH4*) after a decomposing animal has released the ammonium.arrow_forwardHey, I need help answering this biology questions 1. Identify one plant-produced compound that requires nitrogen 2. Why are plants not the most important in the nitrogen cycle? 3. Why is net primary production significantly higher for continental shelf communities than for offshore communities? 4. Why can the activity of microorganisms be assessed by breathing rate?arrow_forwardSome blue-green algae are used as bio fertilisers because they (a) are photosynthetic (b) have mucilage (c) grow everywhere (d) fix nitrogenarrow_forward
- 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_forwardThe Norfolk Broads is an area of rivers and lakes in East Anglia. It is surrounded by farmland and has become a popular area for boating. During the course of this century the water has been polluted by the addition of sewage, animal wastes and fertilizers. This pollution has had a major effect on the ecology of the area. (a) Explain the part played by bacteria in converting organic matter in sewage to nitrate.arrow_forwardSuppose you want to compare the species of bacteria that exist in a polluted stream with the species that exist in an unpolluted stream. Traditionally, bacteria have been identified by growing them in the laboratory and comparing their physical and biochemical properties. You recognize that you will be unable to culture most of the bacteria that reside in the streams. How might you go about identifying the species in the two streams without culturing them in the laboratory?arrow_forward
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