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)