cell theory & cell division ms. zulick feb. 10, 2015
TRANSCRIPT
Cell Theory & Cell Division
Ms. Zulick
Feb. 10, 2015
Cell Theory
1. All living things are made of cells
Which of the following is made of cells?a) Rock
b) Bacteria
c) Fish
d) Skin
e) Glass
f) Eyelashes
Cell Theory
2. Cells have structure
(they contain different parts with their own jobs)
Cell Theory
3. All cells come from other cells
Cell Theory
4. Cells contain DNA or genetic information
2 Types of Cells
1. Eukaryotic = Has a Nucleus
2. Prokaryotic = Has NO Nucleus
To help you remember…
Pro = NO!
Eu = YES!
How do Cells Divide?
Mitosis Videos
Cell Cycle & Cancer : http://youtu.be/lpAa4TWjHQ4
Mitosis : http://youtu.be/gwcwSZIfKlM
As you watch:
Why is it important for your cells to divide?
What are the 4 main parts of Mitosis?
Why is it important for cells to divide?
Helps you grow
Helps heal wounds
Replaces old, worn out cells
Before a cell divides…
Interphase
90% of cell life
Cell is working, doing its job
Towards the end, begins to make a copy of its DNA
Steps of Mitosis: PMAT
1. Prophase
P = Prepare
Cell makes a copy of DNA
DNA condenses into chromosomes
Steps of Mitosis: PMAT
2. Metaphase
M = Middle
Nucleus “dissolves”
Chromosomes line up in the
middle of the cell
Steps of Mitosis: PMAT
3. Anaphase
A = Away
Chromosomes are
pulled apart
Steps of Mitosis: PMAT
4. Telophase
T = Two Twins
Splits into two identical
nuclei and cells
Identify the Steps of Mitosis
A) B)
C) D)