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How Cells Divide Chapter 10
Bacterial Cell DivisionBinary Fission FtsZ protein
Eukaryotic ChromosomesChromosome Numbers Vary Made of Chromatin
Some Vocab Karyotype Haploid Diploid Homologue Chromatids
Overview of the Cell CycleG1 S G2 M C G0
Interphase G1, S, G2
Mitosis Prophase Prometaphase Metaphase Anaphase Telophase
Prophase Condensation of Chromosome Contintues Spindle apparatusAsters Nuclear envelope disassembles
Prometaphase Micrtubules attach to the kinetochoreChromosomes begin to move toward the equator of the cell
Metaphase Chromosomes are aligned at the equator of the cell called the metaphase plate Chromosomes are attached to opposite poles and are under tension
Anaphase Proteins holding centromeres of sister chromatids are degraded, freeing individual chromosomes Chromosomes are pulled to opposite poles Spindle poles move apart
Telophase Chromosomes are clustered at opposite poles and decondenseNuclear envelopes reform around chromosomes Golgi complex and ER re-form
Cytokinesis Plant vs Animal
Control of the Cell CycleIrreversible points Checkpoints
MPF Nondividing cells can be stimulated into division by MPFMPF activity changes throughout the cell cycle It is cyclin pluc cdc2 (aka Cdk) What is a kinase?
Three main CheckpointsG1/S G2/M Spindle Checkpoint (APC) Figure 10.20
Growth Factors Trigger intracellular signaling systemsRTKs and MAP cascades
G0 Phase Dormant Liver vs Intestinal Lining Cells
Cancer Tumor Suppressor genes- p53, Rb Oncognes-ProtoOncogenes
Chapter 12. Cell Division – Why? Growth Repair Reproduction.
Mitosis and Asexual Cell Division John Ireland, Ph.D.
How Cells Divide Chapter Bacterial Cell Division Bacteria divide by binary fission: -the single, circular bacterial chromosome is replicated; -replication.
How Cells Divide Chapter Bacterial Cell Division Bacteria divide by binary fission. -the single, circular bacterial chromosome is replicated -replication.
1 How Cells Divide Chapter Outline Cell Division in Prokaryotes Discovery of Chromosomes Structure of Chromosomes Phases of the Cell Cycle Interphase.
The Cell Cycle and Cellular Reproduction Chapter 9.
Chromosomes Diploid: contains 2 sets of chromosomes Body cells, 2n Haploid: contains 1 set of chromosomes Gametes, sex cells, n Sister chromatids-
Cell Cycle and Mitosis AP Biology Unit 3 Cell Cycle Cell Cycle = the entire cycle of a cell from one division to the next –Interphase (G1, S, G2) = between.
The Cell Cycle Chapter 12. When do cells divide? Reproduction Replacement of damaged cells Growth of new cells In replacement and growth cell.
Copyright © The McGraw-Hill Companies, Inc. Permission required for reproduction or display. Bacterial cell Septum Bacterial chromosome: Double-stranded.
Telophase is a phase of mitosis and the other three are phases of interphase Interphase is a phase of the cell cycle and the other three are phases of.
Ways Cells Divide. Bacterial Cell Division Bacteria divide by binary fission –No sexual life cycle –Reproduction is clonal (no variation in offspring)
Mitosis A Sequencing Activity. Prometaphase The nuclear membrane dissolves Proteins attach to the centromeres creating the kinetochores. Microtubules.
Cell Division and Mitosis Chapter 10 Honors Biology.
Cell Division. Paired “threads” Figure 8.1 An Early View of Mitosis.
Copyright © The McGraw-Hill Companies, Inc. Permission required for reproduction or display. CHAPTER 10.
CELL CYCLE CHAPTER 12. Figure 12.0 Mitosis Figure 12.1a The functions of cell division: Reproduction.
Cell Division Cell divides into two daughter cells Revised
Cell Division The Cell Cycle and Cancer. The Phases of the Cell Cycle.
The Cell Cycle. When do cells divide? Reproduction Replacement of damaged cells Growth of new cells In replacement and growth cell divisions how should.
Cell Cycle: Mitosis How you got from one to trillions!!
Cell Cycle and Cancer. What you need to know Structure of chromosome and chromatin Phases of the cell cycle Stages of Mitosis Differences in plant and.
Cell Division Review. What the four major stages of the cell cycle? Which stages make up interphase?
Cell Cycle and Mitosis. The Cell Cycle: life of a cell from first formation (from a dividing parent cell) to its own division into 2 cells. Before a.
Cell Division and Mitosis Chapter 10. Prokaryotic Cell Division Bacterial cells reproduce by Binary Fission Much simpler process than in eukaryotic organisms.
Lecture ???Date ______ Chapter 12~ The Cell Cycle.
The Process of Cell Division. Learning Objectives Describe the role of chromosomes in cell division. Name the main events of the cell cycle. Describe.
Chapter 9 – Cellular Reproduction Section 2 - Mitosis and Cytokinesis.
Cell Division and Reproduction. Before a cell becomes too large, it divides forming 2 “daughter” cells. This process is called cell division. It keeps.
Major Objectives 1. What are the two key roles of mitotic cell division? 2. Understand the different phases of the mitotic cell cycle and the regulation.
Chapter 12 The Cell Cycle. Rudolf Virchow-1855 “Omnis cellula e cellula” Every cell from a cell. In this chapter we will learn how cells reproduce to.
Cell Cycle. Cell Division Functions Reproduction Grow & Develop Renewal & Repair.
In eukaryotes, heritable information is passed to the next generation via processes that include the cell cycle and mitosis or meiosis plus fertilization.
The Cell Cycle Interphase, Mitosis,and Cytokinesis.
Chapter 12 The Cell Cycle. Why do cells divide? The continuity of life is based on the reproduction of cells: cell division Cells divide to: – Reproduce.
Cell Division and Mitosis Chapter The Cycle of Cell Growth and Division: An Overview The products of mitosis are genetic duplicates of the.
Cell division Chapter 10 Genes and Development. Fig Copyright © The McGraw-Hill Companies, Inc. Permission required for reproduction or display.
Eukaryotic Cell Division Purpose Increase cell number for growth, maintenance, repair, or reproduction Cell Types Somatic Germ Cell Division Cycle Interphase.
10.2 CellDivision Prokaryotes: just separate into two Eukaryotes: Two stages mitosis division of nucleus cytokinesis dividing cytoplasm in two Chromosomes:
The Cell Cycle Chapter 12. Mitosis Cell division Produce 2 daughter cells Same genetic information.
Cell Division Mitosis. Chromosomes Eukaryotes Found in the nucleus Contain most of the genes Made up of two sister chromatids, joined by a centromere.
Ch 12 RQ 1.What functions is MITOSIS used for in the body? 2.What is ALL of the DNA in a cell known as? 3.Nuclear division is also called ____. 4.The.
Chapter 12. Genetic Material Typical cell is ~2 m in length (~250,000x’s the length of the cell) Total genetic material (DNA) in the cell is it’s genome.
Ch.12 Warm up 1. Define: genome, gametes, chromatin, chromosome, centromere, kinetochore, checkpoint, Cdk, MPF 2. What is the longest part of the cell.
Chapter 12~ The Cell Cycle. 3 Key Roles of Cell Division Reproduction Growth and development Tissue renewal and repair.
Chapter 12: The Cell Cycle
The cell cycle Mitosis is only one section of the life cycle of a cell. Interphase is the main part of the cell cycle. This is where DNA is replicated.
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