Textbook Question
Identify where the following processes occur: ammonification, decomposition, denitrification, nitrification, nitrogen fixation. Name at least one organism responsible for each process.
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1. Introduction to Microbiology
Importance of Microorganisms
3:08 minutesProblem 2
Textbook Question
Biogeochemical cycling involves three primary steps: _____, _____ , and _____.
Verified step by step guidance1
Identify the key components of biogeochemical cycles, which typically include the atmosphere, hydrosphere, lithosphere, and biosphere.
Understand that biogeochemical cycling involves the movement of elements and compounds through these components.
Recognize that the three primary steps in biogeochemical cycling are: 1) Reservoir or storage, where elements are stored in large quantities, 2) Exchange or flux, where elements move between different reservoirs, and 3) Transformation, where elements undergo chemical changes.
Consider examples of biogeochemical cycles such as the carbon cycle, nitrogen cycle, and phosphorus cycle to see how these steps are applied.
Reflect on the importance of microorganisms in facilitating these steps, particularly in the transformation processes, such as nitrogen fixation and decomposition.
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Key Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
Biogeochemical Cycling
Biogeochemical cycling refers to the movement and transformation of chemical elements and compounds between living organisms and the physical environment, ensuring the continuous supply and recycling of essential nutrients.
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Krebs Cycle
Primary Steps of Biogeochemical Cycles
The three primary steps in biogeochemical cycles are typically: (1) assimilation, where organisms take up nutrients; (2) transformation, involving chemical or biological changes; and (3) release, where nutrients return to the environment through processes like decomposition.
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Role of Microorganisms in Biogeochemical Cycles
Microorganisms play a crucial role by mediating transformations such as nitrogen fixation, nitrification, and decomposition, which drive nutrient cycling and maintain ecosystem balance.
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