1. Overview of Level of Organization
big
eco-system
systems
community
population
organism
organs
system
organ
tissues
tissue
cell
cells
molecule
small
atom

2. Mitosis – Cell Multiplication
How we get many cells to make tissues in the body?
A process that cells use to make lots of copies of itself
It has two (2) parts:
 cell cycle
 cytokinesis
Cell cycle:
Interphase
Prophase
Metaphase
Anaphase
Telephase
I Play Me A Tune …
Cytokinesis: cell division

3. Mitosis – Cell Multiplication
I Play Me A Tune …
Interphase
no cell division
DNA is coiled up into a black dot
DNA

4. Mitosis – Cell Multiplication
I Play Me A Tune …
Prophase
DNA unfolds and spread out
DNA is now called chromosome
Chromosome comes in
two (2) copies tied at the middle
by the centromere

5. Mitosis – Cell Multiplication
I Play Me A Tune …
Metaphase
Chromosomes line up at the middle

6. Mitosis – Cell Multiplication
I Play Me A Tune …
Anaphase
Chromosomes split into halves and
each half is being pulled towards
the poles

7. Mitosis – Cell Multiplication
I Play Me A Tune …
Telophase
Chromosomes are at the pole
Cell starts to break apart
Cytokinesis – Cell breaks apart forming 2 daughter cells
Interphase
cell cycles start again