Mitosis & The Cell Cycle SPI.1.6 Determine the relationship between cell growth and cell reproduction.
Why Cells go through Mitosis. . . Multicellular Unicellular Growth Repair Reproduction Binary fission
metaphase THE anaphase telophase prophase CELL CYCLE ~ 1 The Life M I T O S I S http://www.biology.arizona.edu/cell_bio/tutorials/cell_cycle/cells2.html metaphase THE CELL CYCLE ~ anaphase prophase telophase 1 G2 (Gap 2) The Life Cycle of The Cell cytokinesis 2 3 Parts in the Cell Cycle Interphase* Mitosis Cytokinesis G1 (Gap 1) S-Phase (DNA Self- Replication)
Mitosis Purpose: Form TWO Nuclei Goal: Same kind of DNA Same number of DNA Amoeba Sisters video link on mitosis
Karyotype
DNA Chromosome Condensed (wrapped up) Chromatin Thin thread like Chromatid 2 chromosomes held together by a centromere
INTERPHASE: Gap 1 MITOSIS Gap 2 S-phase Normal cell functions INTERPHASE is not a stage of mitosis ! Gap 2 S-phase Prep for Mitosis Synthesis of DNA Biological Science, a Molecular Approach. BSCS Blue Version. Heath and Company, 1996.
Interphase Nucleolus visible Nuclear membrane present DNA- chromatin Centrioles Nuclear membrane present DNA- chromatin
Prophase Spindle forms Centrioles migrate to poles of the cell nuclear membrane disappears chromosomes condense nucleolus disappears
Metaphase Chromatids line This organizes the DNA up in the MIDDLE ____________ Chromatids line up in the MIDDLE of the cell This organizes the DNA Middle of the cell is called the equator..
Anaphase Chromatids move AWAY… Chromatids separate & move towards __________ Chromatids move AWAY… Chromatids separate & move towards the poles
Nuclear membrane reforms Telophase Chromosome unwind into chromatin Spindle fibers disappear Nuclear membrane reforms Nucleolus reappears
Which Stage? 1 5 2 3 6 4 7
Cytokinesis The division of the cytoplasm and the rest of the cell besides the nucleus.
Cytokinesis Plant Animal Cell Plate Inside Out Cleavage Furrow Outside In
Cancer Uncontrolled cell growth Cells do not respond to regulation signals Cause tumors Defect in tumor suppressor gene Video on Cancer on Cancer heading