BIO 1140 Lecture Notes - Lecture 1: Archaea, Eukaryote, Plant Cell
27 May 2016
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More efficient for diffusion and things: sa:v ratios, rates of diffusion, adequate concentrations or synthetic capacity. What next: cells can remain individual (for example in blood) or assemble together to for functional tissues and organs, in organ, they work together to obtain the same goal. In order to accomplish the goal, they must work together n sync: they use different type of junctions and chemicals (ions) to communicate. The tree of life: 3 domains: bacteria, archea (prokarya) rrna, membrane phospholipids: more similar to eukarya than bacteria, eukarya (prokarya): protists, fungi, plants and animals. Two main types of cells: dealing with size. Prokaryotes: unicellular bacteria, stay small, keep it simple (because of size, highly adaptable (extremophiles, small genomes (10^6 bp), plasmids, no compartments, no organization (ex: no nucleus) Eukaryotes: unicellular (prtists, multicellular (plants and fungi, larger (10-100um or larger, elaborate membrnes allow compartments to organize cellular functions, transport systems, larger genomes (10^6-10^9 bp), linear, with associated proteins, transport systems.
