BIO 1140 Lecture Notes - Lecture 2: Dna Replication, Robert Hooke, Simple Cell
25 Jan 2017
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Document Summary
Robert hooke used lenses and other objectives to look at the environment in different ways. Created a microscope looked at cork, noticed an organization, thinks of about the same size and shape and saw cellulae the cell walls of previously living cells. The first evidence of scientifically defining what a cell is. Better observation techniques (no fancy microscopes, no pvr yet, do not know dna yet). Ability to communicate science effectively, clearly, and accurately; moreover, must be able to communicate. Viruses need a host to live and thrive. All organisms are composed of one or more cells. The cell is the basic structure and functional unit of living. Cells arise from the existence from division of pre-existing cells. Rnas could be the precursors of cells; the ability to catalyze. Very small inorganic molecules became complex organic macromolecules, to simple cell like structures to prokaryotes to eukaryotes. So that means the first cell did not come from a pre-existing cell.
