1. Cell Processes & Energy
Cell Division
Chapter 2
Section 3

2. The Cell Cycle
The regular sequence of growth & division a cell undergoes
“Parent” cell splits to form 2 identical “daughter” cells

3. Stage 1 - Interphase The Cell… Grows to mature size Copies its DNA
Prepares to divide into 2 cells

4. Stage 2 - Mitosis
1 copy of DNA is distributed into each of the two daughter cells

5. Stage 3 - Cytokinesis
The cytoplasm divides, distributing the organelle into each of the two new cells

6. Length of the Cell Cycle
Depends on the type of cell
Skin cells
4 hours
Liver cells
22 hours
Brain cells
Don’t divide

7. DNA Replication
Each daughter cell will have all of the genetic information it needs to carry out its activities

8. Structure of DNA Double Helix Made of… Adenine Cytosine Guanine
Thymine T

9. James Watson & Francis Crick
Discovered that DNA carries genetic information

10. The Replication Process
DNA “unzips”
Each strand is rebuilt
Now there are 2 strands