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How Cells Divide Chapter 10
Bacterial Cell Division Binary Fission FtsZ protein
Eukaryotic Chromosomes Chromosome Numbers Vary Made of Chromatin
Some Vocab Karyotype Haploid Diploid Homologue Chromatids
Overview of the Cell Cycle G1 S G2 M C G0
Interphase G1, S, G2
Mitosis Prophase Prometaphase Metaphase Anaphase Telophase
Prophase Condensation of Chromosome Contintues Spindle apparatus –Asters Nuclear envelope disassembles
Prometaphase Micrtubules attach to the kinetochore Chromosomes 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 decondense Nuclear envelopes reform around chromosomes Golgi complex and ER re-form
Cytokinesis Plant vs Animal
Control of the Cell Cycle Irreversible points Checkpoints
MPF Nondividing cells can be stimulated into division by MPF MPF activity changes throughout the cell cycle It is cyclin pluc cdc2 (aka Cdk) –What is a kinase?
Three main Checkpoints G1/S G2/M Spindle Checkpoint (APC) Figure 10.20
Growth Factors Trigger intracellular signaling systems RTKs and MAP cascades
G0 Phase Dormant Liver vs Intestinal Lining Cells
Cancer Tumor Suppressor genes- p53, Rb Oncognes-ProtoOncogenes
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.
The cell cycle and mitosis. Cells constantly reproduce exact duplicates of themselves. Why? Replacement Repair Growth.
Figure 12.1 Cell Division. Unicellular Organisms divide to –reproduce themselves Multicellular Organisms divide to –Develop a fertilized cell –Grow –Repair.
Mitosis and the Cell Cycle Cell reproduction. Todays Objectives The student will be able to identify the phases of the cell cycle and mitotic stages by.
Meiosis Pgs Human body cells have 46 chromosomes Meiosis - General Overview Sexual Reproduction and Genetics Each parent contributes 23 chromosomes.
AP Biology Chapter 12: The Cell Cycle. One cell becoming two.
Chapter 12~ The Cell Cycle Biology is the only subject in which multiplication is the same thing as division…
Cell Reproduction Part 1 1. What class of cells is reproduced during mitosis? Germ cells Somatic cells Gametes Haploid cells.
Biology AHSGE Standard VI- Mitosis and Meiosis. Biology AHSGE CONTENT STANDARD 6. Describe the roles of mitotic and meiotic divisions during reproduction,
The Cell Cycle. Chromosomes Carry genetic information in eukaryotes Carry genetic information in eukaryotes Made of DNA and proteins Made of DNA and proteins.
Copyright © 2005 Pearson Education, Inc. publishing as Benjamin Cummings PowerPoint Lectures for Biology, Seventh Edition Neil Campbell and Jane Reece.
Cell Cycle: M Phase Mitosis and Cytokinesis. Cell Division (M phase) Occurs in two stages – Mitosis (nuclear division) – Cytokinesis (cytoplasmic division)
Mitosis & Cytokinesis Cell Growth and Reproduction Ch. 8.2.
Copyright © The McGraw-Hill Companies, Inc. Permission required for reproduction or display. 4.8 Mitosis maintains the chromosome number of the parent.
M phase. DNA at different phases chromatin chromosome histone nucleosome.
Cell Cycle Vocabulary and Notes Biology. Centrioles – one of two tiny structures located in the cytoplasm of animal cells near the nuclear envelope. Chromatid.
Cell Division Mitosis Chapter 10. Why do cells divide, rather than continually grow forever? The larger a cell becomes, the more demands the cell places.
Cell Division and Mitosis. Understanding Cell Division What instructions are necessary for inheritance? How are those instructions duplicated for distribution.
Cell Cycle Cell Growth and Division. 2. Why do cells divide? If the cell is too big: If the cell is too big: Too much demand is placed DNA Too much demand.
THE CELL CYCLE. The Cell Cycle Events that occur in the life of a cell. Includes 3 major stages: 1.Interphase 2.Mitosis 3.Cytokinesis.
Mitosis and Cytokinesis B-2.6 Summarize the characteristics of the cell cycle: interphase (called G1, S, G2); the phases of mitosis (called prophase, metaphase,
Cell Growth and Division Mitosis and Meiosis. Cell Growth When an organism grows, the number of cells increase but the size of each cell remains small.
The Cell Cycle and Mitosis AP Biology. Chromatin VS. Chromosomes.
Cell Division and Mitosis -Chapter 9- Honors Biology Program Mountain Pointe High School.
MEIOSIS AND SEXUAL LIFE CHANGES. YOU MUST KNOW… THE DIFFERENCES BETWEEN ASEXUAL AND SEXUAL REPRODUCTION THE ROLE OF MEIOSIS AND FERTILIZATION IN SEXUALLY.
Chapter 8: Cell Reproduction. Review OrganellesCentrioles Made of microtubules Acts as anchors in cell division Mitotic Spindle fibers Two Main types.
Cell Cycle IPMATC. Cell Cycle 3 Parts: – Interphase – Mitosis Prophase Metaphase Anaphase Telophase – Cytokinesis.
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