1. Cellular Growth
9.1

2. Cell size limitations
When a cell grows and gets big enough, it must divide into two cells from one.
A large cell is harder to maintain than a small cell, and therefore uses more energy.
Other processes that are more easily maintained in a small cell are cellular transport and communication.

3. The Cell Cycle The cell cycle is the entire life span of the cell.
Within the cell cycle, there are three distinct parts.
Interphase
Mitosis
Cytokinesis

4. The Cell Cycle
Interphase- the stage during which the cell grows, carries out cellular functions, and makes copies of DNA.
The cell spends most of it’s time in interphase.
This phase is made up of three individual phases
G1- Growth 1 phase- the cell grows and carries out functions
S phase- synthesis phase- the cell replicates/synthesizes DNA
G2- Growth 2 phase- the cell grows and the organelles double in size to prepare for division

5. The Cell Cycle
Interphase- the stage during which the cell grows, carries out cellular functions, and makes copies of DNA.

6. The Cell Cycle
Mitosis- the stage of the cell cycle during which the cell’s nucleus and nuclear material (DNA) divide.
There are 4 distinct parts of the Mitosis
Prophase
Metaphase
Anaphase
Telophase

7. The Cell Cycle
Cytokinesis- the method by which a cell’s cytoplasm divides to create a new cell.
Cytokinesis follows Mitosis.
The cell does not officially divide until the Cytokinesis.

8. Stages of Interphase
During Mitosis, DNA is condensed into a smaller, move moveable version of itself.
This smaller, condensed version is called a chromosome.
This version can also be called a chromatid.
During interphase, DNA is in it’s relaxed form called Chromatin.
Chromatin is long and stringy.

9. Key points for 9.1
The cell cycle encompasses the entire life cycle of a cell.
The cell cycle consists of 3 distinct phases: Interphase, Mitosis, Cytokinesis
DNA has two forms: chromatin and chromosomes/chromatid