1. Today’s Agenda…
Bellringer: Put these in order from smallest to largest: human, muscle tissue, muscle cell, stomach, digestive system
Questions/Turn in Worksheet
Notes on DNA
Exit Slip

2. Review… What do these cell parts do?
Cell wall?
Cell membrane?
Mitochondria?
Cytoplasm?
Vacuole?
Chloroplast?
Nucleus?

3. Organization inside your body…
Cells
Tissues
Organs
Organ systems
ORGANISM!

4. DNA
Study Pack #5

5. Today’s Goal…
I can describe the structure and function of DNA.

6. Inside the Nucleus The nucleus controls the activities of the cell
The nucleus contains chromosomes that are made up of a chemical called DNA

7. Why is DNA important?
DNA controls how the organism will look and function
Controls the color of your hair
The shape of your ears
Your blood type
How you digest the food you eat
DNA is like the blueprint for the body
The information DNA contains is called genetic information

8. Structure of DNA
Figure 2, Page 591
It looks like a twisted ladder

9. Structure of DNA
The two sides of the ladder form the “backbone” of the DNA molecule
The sides support the steps of the ladder that contain all the genetic information

10. Structure of DNA
The steps are made up of a pair of chemicals called bases
There are only four bases and they pair up in certain ways

11. The Secret of DNA A DNA ladder contains billions of steps
Bases can be arranged in many different ways
This forms a code that tells the cell what substances to make, when to make them, and how to make them
The DNA of all living organisms is different (except for identical twins)

12. More about DNA!
BrainPop

13. Exit Slip!
Today I learned…..
I still have questions about…..