Presentation on theme: "Cell Cycle Events include:"— Presentation transcript:
1 KEY CONCEPT A cell’s life consists of a repeating pattern of events called the cell cycle.
2 Cell Cycle Events include: GrowthCarrying out is jobDNA and organelle duplicationDivision
3 The Cell Cycle is divided into two main stages: Interphase and Cell Division.
4 INTERPHASEPurpose: Grow, Carry out Job, Prepare for Cell DivisionG1 - Cell growth, Do jobDuplicate organellesS - DNA synthesis (copies DNA)G2 - Additional growth,Duplicate organellesNormal functions
5 2 Parts of Cell Division “M” Stage: 1. Mitosis2. Cytokinesis
6 MITOSIS “Nuclear Divison” Purpose: Divides nucleus into 2 genetically identical nuclei4 Stages of Mitosis:ProphaseMetaphaseAnaphaseTelophase
7 CYTOKINESISPURPOSE: Divide the cytoplasm to form two separate cells Animal Cell Plant Cell
8 The Final Product of the Cell Cycle…… 2 Daughter Cells that are genetically identical to the parent cell – same # of chromosomes with same DNA information Start of Interphase End of Interphase/ End of MitosisBeginning of Mitosis End of Cytokinesis
9 Reasons Cells DivideGrowthReplacementRepairMaintain size limit (surface area to volume ratio)
10 Cell size is limited.Volume increases faster than surface area.
11 Cells divide at different rates. The rate of cell division varies with the need for those types of cells.Some cells are unlikely to divide (G0) Ex. Neurons (nerves).