BIOB10H3 Lecture Notes - Electron Microscope, Nanometre, Nucleoid
Document Summary
Early history microscopy figure 1. 1: robert hooke (1665) Cell examining cork: anton van leeuwenhoek (1665-1675) Animicules looking at bond water organisms: matthias schleiden, botanist (1838)/ theodor schwann, zoologist (1839), rudolf virchow (1855) All organisms are composed of one or more cells. The cell is the structural unit of life for all organisms. Cells can arise only by division from pre-existing cell. Basic properties of cells figure 1. 8: cells are highly complex and organized, cells possess genetic program and the means to use it. Transcription and translation machinery genes to proteins: cells are capable of producing more of themselves mitosis and meiosis, cells acquire and utilize energy to develop and maintain complexity. Sun carbohydrates atp: cells carry out many chemical reactions. Enzymes (proteins) use atp: cells engage in numerous mechanical activities. Whole cells can move cell migration: cells able to respond to stimuli. Via surface receptors (proteins: cells are capable of self-regulation.
