01:119:116 Lecture Notes - Lecture 3: Ultraviolet, Chlorophyll, Lysosome
17 Aug 2016
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D. how did eukaryotes evolve? (important: figure 28. 3: endosymbiosis- a relationship between two species in which one organism lives inside the cell or cells of another organism (the host), endosymbiosis general process, 1. ) One bacterium now lives inside the other: 4. ) Both bacteria benefit from the arrangement: 5. ) V. supergroup excavata: some members have a feeding groove, this group includes the diplomonads, parabasalids, and euglenozoans, molecular data indicates that each of these groups is monophyletic. D. euglenozoans (figure 28. 8: includes predatory heterotrophs, photosynthetic autotrophs, mixotrophs, and parasites, these protists have a rod with either a spiral or crystalline rod inside flagella, 2 groups which are best studied, 1. ) B. stramenopiles: has numerous fine, hairlike projections, in most stramenopiles, this hairy flagellum is paired with a shorter. Smooth (nonhairy) flagellum (important: figure 28. 9): 1. ) Dinobryon, are colonial: if environmental conditions deteriorate, many species form protective cysts that can survive for decades, 2 - 10 um, 3. )
