10.4 Study Guide Flashcards
Please give the definition of cellular respiration.
The physical processes (as breathing diffusion) by which a living being obtains oxygen they need to produce energy and eliminate waste gases (as carbon dioxide).
Please give the definition of photosynthesis.
Brings matter and energy into an ecosystem, converting inorganic carbon to organic carbon, and sunlight energy to chemical energy.
Please give the definition of nitrogen fixation.
The chemical processes by which atmospheric nitrogen is assimilated into organic compounds, especially by certain microorganisms as part of the nitrogen cycle.
Please give the definition of Denitrification.
Reduction of nitrates or nitrites commonly by bacteria (as in soil) that usually results in the escape of nitrogen into the air.
Please show a pathway of processes that would occur during the carbon cycle.
Atmosphere —> Photosynthesis —> Consumers —> Cellular respiration —> CO2 into the atmosphere —> Detritus —> Decomposers —> Wood and fossil fuels —> Burning —> CO2 into the atmosphere.
Please show a pathway of processes that would occur during the nitrogen cycle.
Nitrogen fixation x2 —> Assimilation by plants —> Nitrifying bacteria —> Denitrifiers —> From plant to animal —> Decomposition —> Nitrogen in atmosphere.
Please compare and contrast the movement of energy and matter through an ecosystem.
Energy enters the ecosystem as sunlight and leaves as heat. Matter is continuously recycled. They both cannot be destroyed or damaged, but they can both change forms.
Please compare and contrast the carbon and nitrogen cycles.
Carbon travels into the air while nitrogen travels into the ground. Plants and animals are both involved in both cycles.
What is the term for the definition: Brings matter and energy into an ecosystem, converting inorganic carbon to organic carbon, and sunlight energy to chemical energy?
Photosynthesis.
What is the term for the definition:
