Upload
mp-higley
View
43
Download
0
Tags:
Embed Size (px)
Citation preview
Cell Division: Cell CycleCell Division: Cell Cycle GG11: :
– Most of the growthMost of the growth– Synthesis of new proteins Synthesis of new proteins
and organelles and organelles S:S:
– DNA replicatedDNA replicated GG22::
– Shortest phaseShortest phase– Organelles and molecules Organelles and molecules
required for cell division required for cell division are producedare produced
Cell Division: ProphaseCell Division: Prophase ChromatinChromatin
Condenses into Condenses into chromosomeschromosomes
““Colored bodies”Colored bodies” Centrioles separate Centrioles separate
and and spindlespindle begins to begins to formform
Nuclear Membrane Nuclear Membrane dissolvesdissolves
Pro- Professional 1stPro- Professional 1st
Cell Division: MetaphaseCell Division: Metaphase The chromosomes The chromosomes
line upline up at the midline at the midline of the spindleof the spindle
Each chromosome is Each chromosome is connected to a connected to a spindle threadspindle thread
Meta- MiddleMeta- Middle
Cell Division:AnaphaseCell Division:Anaphase SisterSister chromatids chromatids
separate and separate and movemove to to opposite polesopposite poles
Spindle shortensSpindle shortens Ana- AwayAna- Away
Cell Division: TelophaseCell Division: Telophase Chromosomes gather Chromosomes gather
at opposite ends at opposite ends Nuclear membrane Nuclear membrane
reformsreforms Cell begins to Cell begins to splitsplit Telo- TelephoneTelo- Telephone
Cell Division: CytokinesisCell Division: Cytokinesis Animal CellsAnimal Cells
– Cleavage furrow forms Cleavage furrow forms from cell membrane from cell membrane pinching inwardpinching inward
– Cell dividesCell divides into equal into equal partsparts
Plant CellsPlant Cells– Cell plate formsCell plate forms – Cell plate converted Cell plate converted
into cell wallinto cell wall
CancerCancer Uncontrolled cell Uncontrolled cell
growthgrowth Caused by virus, Caused by virus,
chemicals, or chemicals, or mutationmutation
Can damage Can damage surrounding tissue surrounding tissue and spreadand spread