RSM219H1 Lecture Notes - Lecture 20: Nuclear Membrane, Endosymbiont, Deoxyribose
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RSM219H1 Full Course Notes
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Dna duplicates, 2 copies separate by growth of intervening cell membrane. Start with anaerobic/heterotrophic prokaryote: doesn"t need oxygen, but needs food from environment. It eats little bacterium (aerobic prokaryote: aerobic prokaryote is protected by anaerobic prokaryote, anaerobic prokaryote gets food. Plasma membrane invagination occurs: gives rise to nuclear envelope and other organelles. Primitive eukaryotic cell engulfs photosynthetic cyanobacteria: cyanobacteria becomes a chloroplast w/ double membrane system. Attributes of model organisms: rapid development, short life cycle, small adult size (fit in lab, readily available (widespread types, strains, mutants, easy to manipulate/modify/grow, understandable genetics. Eukaryote model organisms: yeast, arabidopsis, c. elegans, drosophila, lab mouse, primates. Mrna translate for proteins trna transports aa for protein synthesis (catalytic roles) rrna are part of ribosomes (catalytic roles) Transcriptome: snapshot of all rnas in cell/tissues at one time. Proteome: all proteins in cell/ tissue at one time. Interactome: all protein interaction at one point in time.
