1. Cell Cycle Phases

2. Interphase cytoplasm double *Organelles double
*Cell Membrane, nuclear membrane,
cytoplasm double
*Organelles double
* DNA in the form of chromatin and
doubled

3. Prophase spindle fibers and centrioles D: Nuclear membrane
A: chromosomes, centromeres,
spindle fibers and centrioles
D: Nuclear membrane

4. Metaphase D: nuclear membrane
Centromeres in middle of cell, attached to chromosomes, which are attached to spindle fibers, which are attached to centrioles
D: nuclear membrane

5. Anaphase chromosomes apart D: Centromeres are lost
*Centrioles tug on spindle fibers pulling
chromosomes apart
D: Centromeres are lost

6. Telophase A: Two new nuclear membranes
D: Spindle fibers and centrioles disappear

7. Cytokinesis = cytoplasm divides
How?
* Animals- cell membrane pinches inward
* Plants- Cell plate grows from center outward

8. Daughter Cells other Each cell contains same number of
* Two new cells identical to parent cell and each
other
Each cell contains same number of
chromosomes as parent cell

9. Cell Cycle Interphase = 80% All Materials Double DNA duplicates
and cell grows
Nucleus
Doubles
Cell Growth
Cytokinesis
Cytoplasm Divides

10. Why is cell cycle needed???
Growth
2. Replace worn out cells
3. Repair damaged cells
Cells that do not go through cell cycle:
Muscle & Nerve

11. Parent Cell
Chromosome
Nuclear
membrane
Cell membrane