BIOL 180 Chapter Notes - Chapter 16: Upwelling, Archaea, Lignin
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BIOL 180 Full Course Notes
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Document Summary
Ecosystem: the community of interacting species present in a region, along with abiotic components (ex. Biosphere: the thin zone of life surrounding the earth. Nutrients: essential elements such as carbon and nitrogen. Human impact has been so dramatic biologically, chemically, and geologically: decline in biodiversity. 53. 1 - how does energy flow through ecosystems: Primary producer (autotroph): an organism that can synthesize its own food from inorganic sources: a self-feeder Using solar energy to manufacture food via photosynthesis. Chemical energy: don"t create energy but transform energy (sunlight) into chemical energy stored in sugars. Total amount of chemical energy produced in a given area and time period. Cellular respiration: primary producers use chemical energy to fuel cellular respiration to produce atp. Atp --> fuels a diverse array of metabolic processes: growth and reproduction: leftover chemical energy can be applied to growth and reproduction. Net primary productivity (npp): energy that is invested by primary producers in building new tissue or offspring.
