BIO206H5 Study Guide - Final Guide: Transmission Electron Microscopy, Scanning Electron Microscope, Cell Membrane
Document Summary
All living thing or organisms are built from cells, small, membrane-enclosed units filled with a concentrated aqueous solution of chemicals and endowed with the ability to create copies of themselves by growing and then dividing into two chemical reactions. These differences in size shape, and chemical requirements often reflect differences in cell. Simplest cells are called solitary cells, higher organisms including ourselves are communities of themselves in an outer layer of slime, building themselves rigid cell walls, or surrounding themselves with hard, mineralized material, such as that found in bone. Cells vary enormously in appearance and function (figure 1-1 pg 3) Cell biology is the study of cells and their structure, function, and behavior. Cell biology can help us to tackle problems of life on earth, its origins, and massive diversity by evolution some modifications specialize a cell so much that they spoil its chances of leaving any decedents.
