Prescott's Microbiology
10th Edition
ISBN: 9781259281594
Author: Joanne Willey, Linda Sherwood Adjunt Professor Lecturer, Christopher J. Woolverton Professor
Publisher: McGraw-Hill Education
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Textbook Question
Chapter 30.3, Problem 2MI
How does the contribution of benthic autotrophs differ in deep lakes compared to that in shallow lakes? How does this affect the relative contribution of phytoplankton in these two aquatic systems?
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Which among A-D is not a step in the eutrophication process?
A) O rapid growth of algae and cyanobacteria
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D) O eventual increase in the numbers of fish and other aquatic life due to the rise m oxygen concentration of the water
E) OA-D are all a part of eutrophication
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Chapter 30 Solutions
Prescott's Microbiology
Ch. 30.1 - Figure 30.1 The Carbonate Equilibrium System....Ch. 30.1 - What factors influence oxygen solubility? How is...Ch. 30.1 - Describe the buffering system that regulates the...Ch. 30.1 - Prob. 3RIACh. 30.1 - What features of a thermocline make it similar to...Ch. 30.2 - How is sulfur cycled between the anoxygenic...Ch. 30.2 - How do heterotrophic microbes contribute to the...Ch. 30.2 - Prob. 3MICh. 30.2 - Prob. 1.1RIACh. 30.2 - Prob. 1.2RIA
Ch. 30.2 - Describe the ecosystem that develops within a...Ch. 30.2 - What is marine snow? Why is it important in CO2...Ch. 30.2 - Prob. 2.2RIACh. 30.2 - Why do you think that, despite their great...Ch. 30.2 - List some metabolic strategies that have evolved...Ch. 30.2 - Describe the role of marine viruses in the...Ch. 30.2 - Explain what is meant by upside-down microbial...Ch. 30.2 - Prob. 2.7RIACh. 30.3 - Figure 30.15 Nutrient Cycling in Antarctic Lakes...Ch. 30.3 - How does the contribution of benthic autotrophs...Ch. 30.3 - Why does water turbulence play only a minor role...Ch. 30.3 - Why is mixotrophy suited for survival in Antarctic...Ch. 30.3 - What is an oxygen sag curve? What changes in a...Ch. 30.3 - What are point and nonpoint source pollution? Can...Ch. 30.3 - Prob. 2.1RIACh. 30.3 - Prob. 2.2RIACh. 30.3 - Why do cyanobacteria often dominate waters that...Ch. 30 - The unicellular cyanobacterium Prochlorococcus sp....Ch. 30 - How might it be possible to cleanse an aging...Ch. 30 - It is well known that bacterivory (the consumption...Ch. 30 - Prob. 4CHI
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- Could there be any advantage for a Phytoplankton cell to not minimize the sinking rate? Explain.arrow_forwardHow efficient is energy transfer between trophic levels in foodwebs?arrow_forwardThe deep scattering layer is created by which of these: a) seasonal changes in the thermocline O b) mesopelagic nekton O c) abyssopelagic plankton O d) phytoplankton bloomsarrow_forward
- An estimated 1000 kg of plant plankton are needed to produce 100 kg of animal plankton. The animal plankton is in turned consumed by 10 kg of fish, the amount needed by a person to gain 1 kg of body mass. i) explain why the amount of biomass declines at each successive trophic level.arrow_forwardWhy is release of sulfide from oxygen minimumzones infrequent, occurring at times of exceptionallyhigh surface water productivity?arrow_forwardHow do plankton density and other parameters affect any observed microhabitat's computed Gross primary product (GPP)?arrow_forward
- Where in the energy and trophic schemes do decomposers enter?arrow_forwardWhat result can a lake give which is rich in organic waste?arrow_forwardAs climate change continues to warm water bodies, what abiotic changes occur in ponds and lakes? How might these changes impact aquatic primary producers and in turn invertebrates and the larger aquatic food web?arrow_forward
- What is not a bioindicator of water pollution?arrow_forwardWhich of the following is true of oligotrophic lakes?arrow_forwardIn a shallow coastal ecosystem dominated by seagrasses, nutrient limit primary production under low nutrient ( oligrtropihc) conditions while light becomes the limiting factor under high nutrient ( eutrophic) condition. In the conceptual model given explain why sea grasses, macroalgae and poluplantkon are in the position of the graph. Kindly explain your answerarrow_forward
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