The Cell Cycle

I. The Cell Cycle - period is variable

Nucleus

Chromosomes.

Two Phases to the cell cycle

A) Interphase

1) G1

2) S Phase

3) G2

B) Mitosis

Prophase

Metaphase

Anaphase

Telophase

Cytokinesis

Importance of the cell cycle

High doses of radiation

II. Differentiation

III. Regulation of the cell cycle

Several factors:

1) Cell contact inhibition

2) Chemical factors

3) Volume to SA ratio

4) Incr cyclin

5) Control Genes - p53 gene

IV. Cancer

1) Benign cancers

2) Malignant cancers

metastasis

3) Types - several

4) carcinogens

1) Radiation, Chemical

2) Viruses -

5) Treatment