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Chapter 8
The Cellular Basis of Activity
Term | Definition |
---|---|
biotic | the living components of the world -in ecosystems, these components include all living things |
abiotic | the non-living components of the world -in ecosystems, these components include sunlight, wind, nutrients, and minerals -absorbed by organisms when excreted as waste or when die |
decomposer | an organisms that lives on decaying organic material, from which it obtains energy and its own raw materials for life -consume partially decomposed organic matter and excrete nutrient-rich waste like nitrogen, phosphorous, and calcium |
biosynthesis | the process of putting together or building up the large molecules characteristic of a particular type of cell or tissue, in other words, reactions that put create the macromolecules needed for life |
ecology | the study of living and non-living components of the environment and of the interactions that affect biological species |
ecosystems | a biological community in its abiotic environment |
when the types and amounts of matter in an ecosystem ------, the ecosystem --- | -remains essentially the same across time -remains in balance |
when the types and amounts of matter in an ecosystem -, the ecosystem ----- | - change -is forced to change too |
not only does - move through an ecosystem, but some of it makes a complete - within it | -matter -cycle |
Water Cycle... | the water cycle collects and redistributes the Earth's water supply |
Carbon Cycle... | in a stable ecosystem, the total number of carbon atoms will remain approximately the same |
What are the four main processes that move carbon? | 1. biological processes 2. burial and decomposition process 3. geochemical processes 4. human processes |
Nitrogen Cycle... | the atmosphere is the main reservoir of nitrogen; it also cycles through the soil and tissues of living organisms |