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The Cell Cycle and MitosisCell Division The Cell Cycle and Mitosis
Why do cells divide? Growth Reproduction Repair
Chromosomes Carry genetic information from one generation of cells to the next Made up of two sister chromatids Sister chromatids meet at the centromere Not visible in cells except in cell division
Cell Division Process by which a cell divides into two daughter cellsBefore division, cell replicates all its DNA Each daughter cell will get one complete set of genetic information
Cell Cycle Cell Cycle: set of events making up the life of a cell; composed of interphase, mitosis and cytokinesis
Interphase The time between cell divisions where the cell spends most of its life Cell is in a resting phase, performing normal cell functions Composed of G1, S and G2 phases
Interphase: G1, S, G2 G1 (Growth 1)- offspring cells grow to mature size S (Synthesis)- DNA copies G2 (Growth 2)- cell prepares for division
Mitosis DIVISION OF THE NUCLEUS 4 phases: 1.prophase 2.metaphase3. anaphase 4.telophase
Prophase Chromosomes become visibleCentrioles separate and move to opposite sides of cell Spindle fibers form
Prophase Nucleolus disappearsNuclear envelope breaks down and disappears Longest phase
Metaphase Chromosomes line up along the equatorChromosomes connected to spindle fibers at centromere Shortest phase
Anaphase Centromeres divideSister chromatids separate and move to opposite poles When chromatids separate, considered individual chromosomes (daughter chromosomes)
Telophase Nuclear envelope forms around each group of chromosomesChromosomes unwind Spindle fibers disassemble Cytokinesis begins
Cytokinesis The process by which the cytoplasm divides and one cell becomes two individual cells Different in plants and animals Animals- cell pinches inward Plants- a new cell wall forms between the two new cells
Cytokinesis- Animal Cell
Cytokinesis- Plant Cell
Cytokinesis- Plant vs. Animal
Mitosis in Action
Section 10-2 Cell Division
The cell cycle and mitosis
Cell Cycle Vocabulary and Notes
The Cell Cycle.
1 Review What are chromosomes Compare and Contrast How does the structure of chromosomes differ in prokaryotes and eukaryotes 2 Review What happens during.
Cell Growth and Division
Mitosis and Cytokinesis
Mitosis Flash Cards Ch 4.
Section 10.2 (Pg ): The Process of Cell Division
Chapter 10.2 Cell Division.
10.2 The Process of Cell Division
The Cell Cycle and Mitosis
The Cell Cycle Science 9 Lesson #6.
Cell Cycle The repeating set of events in the life of a cell. The repeating set of events in the life of a cell. Includes Includes Interphase Interphase.
10 – 2 Cell Division Mitosis. Chromosomes DNA is passed on in chromosomes DNA is passed on in chromosomes Every organism has a specific # of chromosomes:
Cell Cycle, Mitosis, and Meiosis
MITOSIS the key to growth.
Mitosis. Common to most living things Sequence of growth and division of a cell.
Chapter 11 review Ms. Parekh.
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