BIOL240 Lecture Notes - Lecture 1: Genetic Variation, Robert Hooke, Smallpox

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Response/ adaptation to the external environment, homeostasis (maintaining internal organization and order, usually by using energy: defense, working together, communication, control, regulation, storing. More than half of cells are amino acids (structural and catalytic functions) Bc so many ribosomes in a cell they contain lots of protein and. Rna (ribonucleotides) which is why 2nd most abundant) 3rd most abundant is lipids as they make up whole cell membrane and lots of organelles are encircled by lipids. Remember ball parks of amounts of proteins in each: polypeptides= building blocks for enzymes and other proteins, the phylogenetic tree: archaea, bacteria, eukarya (based on ribosomal rna sequences, each domain has some similarities and some differences. Exam q! (#1) about how the tree changed. 1% and then another bill to get 20% o2 atmosphere we have today (allowing for aerobic respiration: multicellular fossils dating back to 0. 5 bya have been found microbes dominating planet for approx.

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