Campbell Biology in Focus; Modified Mastering Biology with Pearson eText -- ValuePack Access Card -- for Campbell Biology in Focus (2nd Edition)
2nd Edition
ISBN: 9780134433776
Author: Lisa A. Urry, Michael L. Cain, Steven A. Wasserman
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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Which of the following statements is/are TRUE for nitrogen fixation?
A. Process is performed by nitrifying soil bacteria.
B. Performed by bacteria present in the roots of all plants.
C. Reduction of N2 to NH3.
D. Consumes a negligible amount of ATP.
Why does secondary treatment of wastewater require O2?
A. Secondary treatment relies on anaerobic microbes to oxidize organic material.
B.Secondary treatment relies on anaerobic microbes to reduce organic material.
C.Secondary treatment relies on aerobic microbes to oxidize organic material.
D.Photosynthetic bacteria are involved in secondary treatment and they require O2.
E. Flocs require oxygen to facilitate biofilm formation.
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; Modified Mastering Biology with Pearson eText -- ValuePack Access Card -- for 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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- ... Bacteria that grew in the bottom of nutrient broth tube is: a. Anaerobic A b. Flocculent c. Pellicle d. Sediment Reply...arrow_forwardWhich form of Nitrogen is not available for organism growth represents which of these below?a. NH4+b. NO3-c. N2d. all of these3arrow_forwardWhich of the following is true regarding plants and the nitrogen cycle? a. Nitrogen is a micronutrient b. Nitrogen is used for regulation of ion channels c. None of the above are true d. Nitrogen gas is fixed directly by plants e. Plants use fungi to 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_forwardThis 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_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
- Nitrogen 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_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_forwardwhat process can give plants an advantage because of the presence of these bacteria undergoing the following process can provide them with nitrogen for the production of protein? A. nitrifying B. denitrifying C. ammonification D. nirtogen fixingarrow_forward
- 1. Which of the following is most likely to result in "immobilization"? A. Assimilation B. Ammonification C. Sulfur oxidation D. Mineralization E . Denitrification 2. What metabolic type in the carbon cycle would most likely benefit from living in the presence of a starch-digesting microbe in an anaerobic environment? A Sugar fermenter: B. Methanogen C. Carbon fixer D. Methane oxidizer E CO reducer 3. Which two of the following choices are the goals of pasteurization? A Kill all spoilage microbes B. Sterilize C. Kill all pathogens D. Reduce spollage microbes E. Reduce pathogen numbersarrow_forwardDenitrification is which of the following? a. Organisms like algae, cyanobacteria and plants are capable of using light energy which is trapped by chlorophyll, to convert carbon dioxide and water into oxygen and glucose b. The first step in the synthesis of virtually all nitrogenous compounds c. The decomposers - certain soil bacteria and fungi e.g. ammonifying bacteria - break down proteins in dead organisms and animal wastes, releasing ammonium ions d. Nitrates are reduced to nitrogen gas by denitrifying bacteria e. Aerobic respiration requires oxygenarrow_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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