Download Cell membrane Chromatin Nuclear membrane

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Goal: one cell creates two new
identical cells
1. Interphase – period of rapid growth
– all materials are doubling
2. Mitosis - nucleus of cell divides [4 stages]
Prophase
Metaphase
Anaphase
Telophase
3. Cytokinesis - cytoplasm divides
1. Growth – allows organism to
reach maturity
2. Replace worn out cells- every cell dies at some
point
3. Repair damaged cells – allows damaged areas of
organisms to be fixed
Cells that do not go through cell cycle: Muscle & Nerve
Chromosome
Nuclear
membrane
Cell membrane
[Increasing]
Cell membrane
* Cell Membrane, nuclear membrane, cytoplasm,
and all organelles double
* DNA doubles
* DNA long, thin threads = chromatin
*Cell needs to double all materials in order to be
able make two new cells
Nuclear
membrane
Chromatin
[Preparing]
Centrioles
*DNA shortens and coils- chromosomes
appear
*Centromeres appear [hold chromosomes
together]
*Spindle fibers appear
*Centrioles appear [poles found in
animal cells, will guide chromosome
movement]
* Nuclear membrane begins to disappear
Centromere
Nuclear
membrane
Chromosome
Spindle fibers
[Middle]
*Chromosomes line up in center
of cell and attach to spindle fibers
* Spindle fibers attach to centrioles
Centriole
Centromere
Chromosome
Spindle fiber
[Apart]
Chromosome
*Centrioles tug on spindle fibers
pulling chromosomes apart
* Centromeres are lost
Centriole
Spindle fiber
[Two new]
*Two new nuclear membranes appear
creating two new identical nuclei
*Spindle fibers and centrioles disappear
Chromosome
Nuclear membrane
[cytoplasm divides]
Cell membrane
* Cytokinesis
Chromosomes
= cytoplasm divides
How?
* Animals- cell membrane pinches
inward
Cell Plate
Nuclear membrane
* Plants- Cell plate grows from center
of cell outward
Nuclear
membrane
* Two new cells identical to parent
cell and each other
* Each cell contains same number
of chromosomes as parent cell
Chromosome
Interphase = 80%
All Materials Double
DNA duplicates
and cell grows
Nucleus
Doubles
Cell
Growth
Cytoplasm Divides
Interphase
Prophase
Metaphase
Anaphase
Telophase
Cytokinesis
Daughter Cells
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