BIO 1406/07 BK/LAB/CODE PREPACK
12th Edition
ISBN: 9781265538590
Author: Raven
Publisher: MCG
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Chapter 56, Problem 3U
Summary Introduction
Introduction:
The nitrogen is a macronutrient, which is required by the living organisms in a larger amount. The nitrogen is a major component of the
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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.
Which of the following statements DOES NOT describe nitrogen fixing bacteria?
A. Can be found only as a symbiotes associated with the root nodules of legumes.
B. Maybe be present in soil.
C. Converts atmospheric nitrogen to organic nitrogen.
D. Composed of many species of bacteria.
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-).
Chapter 56 Solutions
BIO 1406/07 BK/LAB/CODE PREPACK
Ch. 56.1 - Prob. 1LOCh. 56.1 - Prob. 2LOCh. 56.1 - Prob. 3LOCh. 56.2 - Describe the different trophic levels.Ch. 56.2 - Distinguish between energy and heat.Ch. 56.2 - Explain how energy moves through trophic levels.Ch. 56.3 - Explain the meaning of trophic cascade.Ch. 56.3 - Prob. 2LOCh. 56.4 - Define ecosystem stability.Ch. 56.4 - Prob. 2LO
Ch. 56.4 - Prob. 3LOCh. 56.5 - Prob. 1LOCh. 56.5 - Prob. 2LOCh. 56 - Prob. 1DACh. 56 - Prob. 2DACh. 56 - Prob. 3DACh. 56 - Prob. 4DACh. 56 - Prob. 1IQCh. 56 - Prob. 2IQCh. 56 - Prob. 3IQCh. 56 - Prob. 4IQCh. 56 - Prob. 5IQCh. 56 - Prob. 6IQCh. 56 - Prob. 7IQCh. 56 - Which of the statements about groundwater is NOT...Ch. 56 - Photosynthetic organisms a. fix carbon dioxide. b....Ch. 56 - Prob. 3UCh. 56 - Nitrogen is often a limiting nutrient in many...Ch. 56 - Prob. 5UCh. 56 - Prob. 6UCh. 56 - Inverted ecological pyramids of real systems...Ch. 56 - Prob. 8UCh. 56 - Prob. 9UCh. 56 - The equilibrium model of island biogeography...Ch. 56 - Based on results from studies at Hubbard Brook...Ch. 56 - According to the trophic cascade hypothesis, the...Ch. 56 - At Cedar Creek Natural History Area, experimental...Ch. 56 - Given that ectotherms do not utilize a large...Ch. 56 - Given that, in general, energy input is greatest...Ch. 56 - Prob. 3SCh. 56 - Explain several detailed ways in which increasing...
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- Antibiotics enter the environment in wastewater from pharmaceutical manufacturing plants, in wastes from farms where they are used in animals, and in sewage from human populations. (Many antibiotics are excreted in their active form.) The influx of antibiotics into the environment is a concern because the presence of these compounds in the environment selects for antibiotic resistance. As pollutants, antibiotics can also have ecological effects. Describe some of the ecological roles of bacteria, and explain why disruption of these roles by antibiotic pollution would have a negative impact.arrow_forwardWhich of the following processes is described in the reaction shown in the picture? a.denitrification b.nitrification c.nitrogen fixation d.assimilationarrow_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_forward
- Denitrifying bacteriaa. convert ammonia to nitrate.b. convert nitrate to ammonia.c. convert N2 to ammonia.d. convert nitrate to N2.arrow_forwardThe thermoacidophile Sulfolobus acidocaldarius is an archaean organism that can tolerate environments that are high in temperature and low in pH. It lacks peptidoglycan, but still possesses a cell wall. Which of the following statements is likely to be an accurate description of this species? A. It is a bacterium. B. The optimal pH of its enzymes will lie above pH 7. C. It could inhabit hydrothermal springs. D. It could inhabit alkaline hot springs.arrow_forwardWhich of the following processes is/are used to fix atmospheric N2? a.bacterial action b.Haber process c.lightning d.transaminationarrow_forward
- Nitrogen fixation is the conversion of Select one: a. N2 to NH3 b. N2 to urea C. N2 to N d. N2 to NO3arrow_forwardDetermine which is a primary or secondary metabolite and explain why. a.) Glycogen b.) Luciferinarrow_forwardThe first organic compound made during nitrogen assimilation is: Select one: a. a protein b. an amino acid c. nitrite d. ammonia e. the amino acid glutathionearrow_forward
- The 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_forwardWhat genus of bacteria transforms ammonia to nitrite in the Nitrogen cycle? A. Nitrobacter B. Nitrosomonas C. detritus D. Legumesarrow_forwardThe chemical representation of algae is C106H263O110N16P. The Gulf of Mexico contains 0.2 mg/L of nitrogen and 0.08 mg/L of phosphorus. a.Which is the limiting nutrient for algal growth in the water? Assume all other nutrients are abundant. b.What will be the mass of algae produced per liter of water (mg/L) in an algal bloom? c.If the nitrogen source is reduced by 50%, would the algae production also decrease by half? d.If the phosphorus source is reduced by 50%, would the algae production also decrease by half?arrow_forward
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