BIOL 205 Lecture Notes - Lecture 2: Chlorophyll, Action Spectrum, Organelle
3 Sep 2016
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Document Summary
Body plans of organisms: unicellular organism, multicellular animals, ectoderm, sensory system and skin, endoderm. Inner lining of organs: mesoderm, muscular, excretory and reproductive systems, multicellular plants, filamentous body, circular flat, modular structure, module = phytomer. Structural organization of multicellular organisms: multicellular cells are highly specialized, can only live together in a system, animals, 5 types of tissue connective, epithelial. 2: muscle, nervous, vascular, plants, 3 basic tissue systems, vascular. 1. conducts fluids: dermal, external protection, ground. Implication of size of organisms: surface area cannot keep up with the increase in volume, v = l^3, sa = v ^(2/3, isometry and similarity. 1. (a1/a2) = (b1/b2) = (c1/c2) = k: allometry, shape changes as size changes. Intercellular communication: cells can communicate with each other. 1: gaps junctions which let small molecules pass, cells can be completely isolated, blood-brain barrier. Information + raw materials + energy -- organism: plants are the primary producers of food!
