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CHAPTER NEW CHAPTER Cell Division the BIG idea Organisms grow, reproduce, and maintain themselves through cell division. 3.1 Cell division occurs in all organisms. 3.2 Cell division is part of the cell cycle. 3.3 Both sexual and asexual reproduction involve cell division. CHAPTER OUTLINE CHAPTER RESOURCES 3.1 KEY CONCEPT CHAPTER HOME Cell division occurs in all organisms. CALIFORNIA Content Standards VOCABULARY DNA chromosome 7.1.c Students know the nucleus is the repository for genetic information in plant and animal cells. 7.2.e Students know DNA (deoxyribonucleic acid) is the genetic material of living organisms and is located in the chromosomes of each cell. CHAPTER RESOURCES SECTION OUTLINE 3.1 CHAPTER HOME KEY CONCEPT Cell division occurs in all organisms. • In unicellular organisms the function of cell division is reproduction. One cell splits into two! • In multicellular organisms functions of cell division include growth, development, and repair. break in skin new cells pushed up to fill cut wound is healed dividing cells new cell layers cells stop dividing VOCABULARY DNA chromosome CHAPTER RESOURCES SECTION OUTLINE 3.1 KEY CONCEPT CHAPTER HOME Cell division occurs in all organisms. I. Cell division occurs in all organisms. VOCABULARY DNA A. Cell division is involved in many functions. chromosome B. The genetic material of eukaryotic cells is organized in chromosomes. 1. DNA 2. Chromosomes C. Cell division is involved in growth, development, and repair. 1. Growth 2. Development 3. Repair CHAPTER RESOURCES KEY CONCEPT SUMMARY 3.2 KEY CONCEPT CHAPTER HOME Cell division is part of the cell cycle. CALIFORNIA Content Standards VOCABULARY cell cycle interphase 7.1.c Students know the nucleus is the repository for genetic information in plant and animal cells. 7.1.e Students know cells divide to increase their numbers through a process of mitosis, which results in two daughter cells with identical sets of chromosomes. mitosis cytokinesis CHAPTER RESOURCES SECTION OUTLINE 3.2 CHAPTER HOME KEY CONCEPT Cell division is part of the cell cycle. The cell cycle has two main phases, interphase and mitosis. Most of the life cycle of a cell is spent in interphase. During mitosis, the nucleus divides. VOCABULARY cell cycle interphase mitosis cell grows and carries out normal activities; organelles duplicate cytokinesis DNA replicates cell grows and prepares for mitosis CHAPTER RESOURCES SECTION OUTLINE 3.2 KEY CONCEPT CHAPTER HOME Cell division is part of the cell cycle. II. Cell division is part of the cell cycle. VOCABULARY cell cycle A. The cell cycle includes interphase and cell division. 1. Interphase 2. Cell Division Phase interphase mitosis cytokinesis B. Cell division produces two genetically identical cells. 1. Steps of Mitosis 2. Division of the Cytoplasm CHAPTER RESOURCES KEY CONCEPT SUMMARY 3.2 CHAPTER HOME KEY CONCEPT Cell division is part of the cell cycle. The cell cycle has two main phases, interphase and mitosis. Most of the life cycle of a cell is spent in interphase. During mitosis, cells divide. VOCABULARY cell cycle interphase mitosis VISUALIZATION VISUALIZATION Match images of cells dividing with the different stages of cell division. CLASSZONE.COM cytokinesis Watch the process of mitosis in action. CHAPTER RESOURCES SECTION OUTLINE 3.3 KEY CONCEPT CHAPTER HOME Both sexual and asexual reproduction involve cell division. CALIFORNIA Content Standards 7.2.a Students know the differences between the life cycles and reproduction methods of sexual and asexual organisms. VOCABULARY asexual reproduction binary fission regeneration CHAPTER RESOURCES SECTION OUTLINE 3.3 CHAPTER HOME KEY CONCEPT Both sexual and asexual reproduction involve cell division. Some organisms reproduce asexually. Both asexual and sexual reproduction involve cell division. VOCABULARY asexual reproduction binary fission Asexual and Sexual Reproduction Asexual Reproduction Sexual Reproduction One parent organism Two parent organisms Offspring’s genes are identical to parent’s genes Offspring’s genes are combined from two parents Can reproduce quickly Usually reproduce more slowly regeneration CHAPTER RESOURCES SECTION OUTLINE 3.3 KEY CONCEPT CHAPTER HOME Both sexual and asexual reproduction involve cell division. III. Both sexual and asexual reproduction involve cell division. A. Asexual reproduction involves one parent. 1. Cell Division in Unicellular Organisms VOCABULARY asexual reproduction binary fission regeneration 2. Budding 3. Regeneration 4. Asexual Reproduction and Health B. Sexual reproduction involves two parent organisms. CHAPTER RESOURCES KEY CONCEPT SUMMARY CHAPTER HOME Image Gallery Click on the icons to see a larger image or animation. VISUALIZATION VISUALIZATION Match images of cells dividing with the different stages of cell division. CLASSZONE.COM Watch the process of mitosis in action. CHAPTER HOME Chapter Resources Image Gallery Review Game Animations Click here to review chapter images and animations Play a fun interactive review game Link to all the McDougal Littell Science animations Click on the items below to access resources on CLASSZONE.COM Content Review Audio Readings Review key concepts and vocabulary Hear chapter audio readings Resource Center Math Tutorial Get more information on select science topics Review math concepts Standardized Test Practice Practice state standardized tests BACK TO CHAPTER