DNA Extraction Lab      

Go here for help and to see where we got this lab

Procedure

1.     Blend peas, 1/8 teaspoon salt, and twice as

        much water as peas for 15 seconds (done for you)

2.     Strain the mixture (done for you)

3.     Pour mixture into test tube, fill about 1/3 of the way up

4.     Measure the amount of liquid, add 1/6 that amount of detergent, stir, and let sit for 5 min

5.     Add a pinch of enzymes and stir gently

6.     Tilt test tube and slowly pour alcohol so it forms a layer on top of mixture, add same amount of alcohol as the amount of pea mixture

7.     Use stick to remove stringy stuff from the top

 Student Photos

Questions    Go here for help

1.     Write down your observations for what happened during each step above.

  2.     What is the point of the first step- blending?

  3.     What does the detergent do?

  4.     What does the enzyme do?

  5.     What was the stringy stuff that you ended up with?

6.     Would this work for other types of organisms? Explain why.