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Name________________________ Class # ______ Period_________ Date___________ Notes Outline: Mitosis and Cell Division (6.2) “ As cells busily carry out the functions of life, they grow and develop. When most cells reach a certain size, they either stop growing or divide into two cells. Cell division is essential for the growth and development or an organism.” I. How Bacteria Divide A. II. Introduction When a healthy, living cell reaches a certain size, it will either stop growing or divide ________________________________________________________________________ In bacteria, the hereditary information is encoded in a single circle of DNA ________________________________________________________________________ In bacteria, cell division takes place in two stages ________________________________________________________________________ First DNA is copied, then the cell splits ________________________________________________________________________ How Eukaryotic Cells Divide A. Introduction Eukaryotic cells carry far more DNA than bacteria ________________________________________________________________________ Chromosomes: ________________________________________________________________________ A typical human cell contains 46 chromosomes, located within the nucleus ________________________________________________________________________ Two processes evolved enabling eukaryotic cells to divide: Mitosis & Cell Division ________________________________________________________________________ Mitosis: ________________________________________________________________________ Cytokinesis: ________________________________________________________________________ The end result of mitosis and cell division is two cells with the same genetic information ________________________________________________________________________ III. The Cell Cycle Mitosis and cytokinesis are just small portions of a cell’s lifespan. Cell Cycle_______________________________________________________________ IV. ____________________________________________________________ Life Span of Cells A. Introduction No cells live forever ________________________________________________________________________ On rare occasions, cells disobey the instructions to die ________________________________________________________________________ Tumor:_________________________________________________________________ ________________________________________________________________________ Cancer: ________________________________________________________________ ________________________________________________________________________ Mutation:_______________________________________________________________ ________________________________________________________________________ Sections Completed__________Questions Answered________ Total Grade___________