1. Cell Cycle Diagram .

2. Interphase Interphase :3 sub groups G1, G0, (part of G1) S and G2
Interphase between stage cell grows to full size, duplicates its DNA and rests

3. G1 Phase - Growth Occurs just after cell division
Cell must re-grow to normal size
Proteins are made

4. G0 Phase – the Resting Phase
Cell is “normal” during this phase
Cell undergoes normal cell functions while resting
A cell that skips this phase can become cancerous, growing uncontrollably

5. Check points
Places where cell checks itself for damage before proceeding
Cancer bypasses check points

6. S Phase - Synthesis DNA is copied for cell division
Once in S phase it is committed to go through cell division

7. G2 Phase - Growth
Cell grows larger in preparation for cell division (like a bear hibernating)

8. M Phase - Mitosis Division of cell Nucleus DNA forms into chromosomes
Chromosomes separate with identical pairs moving to opposite sides of the cell
New nuclear membrane forms around each set of chromosomes

9. 1) Prophase Cell is beginning mitosis DNA coils up forming chromosomes
Spindle fibers form
Nuclear membrane dissolves
Centrioles appear
Chromosomes
Centrioles
Spindle fibers

10. 2) Metaphase Chromosomes line up along center
Centrioles migrate to poles
Spindle fibers attach to chromatids at centromere
Chromosomes line up
Spindle fibers
centrioles

11. 3) Anaphase Spindle fibers pull duplicate chromatids apart
Chromatids migrate to opposite poles
Spindle fibers
Chromatids

12. 4) Telophase Chromotids gather together on separate sides
Membrane forms around chromatids making 2 separate nuclei
Chromatids unwind
Cell membrane begins to pinch together
Chromatids
Nuclear membrane
Cleavage furrow

13. C Phase – Cytokinesis
Division of the cytoplasm and organelles between cells
Membrane closes off each cell
2 new daughter cells form, each an identical copy of the original parent cell. (but smaller)
Daughter cells
Nucleus
DNA
cytoplasm
membrane