BIOLOGY 1101 Lecture Notes - Lecture 26: Gastrointestinal Tract, Eurasian Lynx, Food Energy
6 Sep 2016
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Document Summary
Unicellular prokaryotes, at first glance similar to bacteria. Many genes and metabolic pathways more like those of eukaryotes than bacteria. Many are extremophiles: can survive in unusually harsh environments: bacteria. Biomass of bacteria on earth exceeds that of all other life combined. Like archaea, can utilize many energy sources to survive: plants. Estimated to be over 3 million species of plants on earth. Cells have a cell wall made of ceullulose: fungi. Estimated to be 1. 5 to 5 million species, vast majority undescribed. Cells have a cell wall made of chitin: animals. Not a real taxonomic group, grab bag of things that didn"t fit elsewhere. Are eukaryotic, can be unicellular or multicellular. All of the biotic components living in the same place at the same time which interact (directly or indirectly) with one another. When hare are abundant, lynx are also. Sun producers primary consumers secondary consumer tertiary. 10 % makes it to the next level.
