The Cell, Revised Edition contains new and revised material throughout, accompanied by many photographs and line drawings, all of which are now in color. Updated chapters in this timely resource now cover the recent controversy over the teaching of creationism in public schools, life on other planets, bacterial populations, and the potential threat of certain pathogenic species, as well as a more detailed discussion of eukaryote structure and function. New chapters have been added on the many cells that make up the human body as well as the crucial role that photosynthesis plays during the formation of the Earth's biosphere.