cell cycle & mitosis
DESCRIPTION
Cell Cycle & Mitosis. Cell Cycle. Cell Cycle = IMPAT I = Interphase MPAT= Stages of Mitosis. Cell Cycle. Mitosis. Interphase (stage before mitosis!) G1 + S + G2 = Interphase Cell grows, makes more cytoplasm and organelles duplicate, copies DNA, and gets ready to divide. Prophase. - PowerPoint PPT PresentationTRANSCRIPT
Cell Cycle & Mitosis
Cell CycleCell Cycle = IMPAT
I = InterphaseMPAT= Stages of Mitosis
Cell Cycle
Mitosis•Interphase (stage before mitosis!)
•G1 + S + G2 = Interphase
• Cell grows, makes more cytoplasm and organelles duplicate, copies DNA, and gets ready to divide
Prophase
•Chromosomes shorten & thicken
•Centrioles move to opposite poles of the cell
•Spindle fibers extend from the centrioles toward each chromosome
•Nuclear membrane dissolves
Metaphase
•During late prophase chromatids begin to move toward the cell equator (metaphase plate)
•At metaphase the chromatids are aligned at the equator
Anaphase
•Chromatids begin to move apart, toward opposite poles
Telophase
•Chromosomes reach opposite poles of the cell
•Spindle fibers dissolve
•Nuclear membrane reforms at each end of the cell
Cytokinesis•Cytokinesis = splitting of the
cytoplasm
•Not an actual “phase of mitosis”.
•The division of cytoplasm after separation of the chromosomes
•In plant cells, a new cell wall forms to divide the two daughter cells (CELL PLATE)
•In animal cells, the cleavage furrow forms