1. DNA Extraction Lab

2. Here is the level of organization of all living things
Let’s start with the cell

3. Cells come together to make tissues

4. Tissues come together to form organs

5. Organs work together to make organ systems

6. Organ systems work together to form an organism

7. Let’s review…
cell
tissue
organ
Organ system
organism

8. Back to cells
Animal Cell
Plant Cell
Where is the Dna?
In the nucleus

9. First, we Go into the cell
Get the dna
Break through the membranes

10. Here is what we will need…
Meat tenderizer
water
Dishwashing soap
bananas
salt
Ethyl alcohol

11. Breaks through the membranes
What does each do?
Dishwashing soap
Breaks through the membranes

12. Breaks down proteins in meat to make tender
Meat tenderizer
Yum!!
Little proteins in dna
The meat tenderizer dissolves proteins that hold dna together and lets it unwind.

13. Separates the dna from the unwanted cell parts
salt
Unwanted cell parts
dna
Separates the dna from the unwanted cell parts

14. Dna does NOT dissolve in alcohol
Dna dissolves in water
water
Dna does NOT dissolve in alcohol
Ethyl alcohol

15. What lab equipment will we need?
microcentrifuge
Test tubes
Graduated cylinder
paperclips
Test tube holder

16. Let’s begin!