1. Cell Growth Ms. Cuthrell

2. 1.2.2
Analyze how cells grow and reproduce in terms of interphase, mitosis and cytokinesis.

3. The Cell Cycle Overview
1. Interphase (cell appears normal)
Growth 1 (G1 phase)- growth of cell
Synthesis (S phase)- DNA is copied
Growth 2 (G2 phase)- more growth
2. Mitosis-cell division
Prophase
Metaphase
Anaphase
Telophase
3. Cytokinesis- cytoplasm divides; division complete

5. Asexual Reproduction
Mitosis is considered asexual reproduction because it produces IDENTICAL copies of a cell for growth and repair.
There is genetic stability- no variation!

6. Parent cell
Chromosomes are copied and double in number
Chromosomes now split
2 daughter cells identical to original

7. Interphase
Cell grows and carries on metabolism; chromatin is replicated and condensed so sister chromatids are joined at the centromere.
It is the longest phase.

8. Prophase Nuclear envelope disappears
Spindle fibers form which are attached to 2 centrioles (only found in animal cells).
Chromatin coils to form visible chromosomes.
Chromosomes attach to spindle.

9. Metaphase
Chromosomes are lined up at the equator (middle) of the spindle.
Centrioles are at opposite ends of the cell.

10. Anaphase
Centromeres split and sister chromatids are pulled apart to opposite poles of the cell.

11. Telophase
Nuclear envelope reforms around chromosomes at each pole.

12. Cytokinesis
The splitting of the cytoplasm to form 2 distinct cells.

13. Plants apical meristem (roots and shoots)

14. Rat – epithelial cells

15. Results of Mitosis
Cells->Tissues->Organs->Organ Systems-> Organisms