Extraction of DNA Questions

Lab Report

Name: ________________________
Section: ______________________

Extraction of DNA
Exercise 1 - Extraction of DNA
1. In the space below draw what the DNA at interface looked like.

2. Before pouring out the contents, use the stirring rod to remove the DNA from the test
tube by gently moving the rod in a circular motion.
3. Describe what the DNA from the split peas look like.

4. Is there more or less DNA than you expected to see?

5. What does the blending or mashing of the peas do?

6. Which of the procedures that you used allow the “release” of the DNA from the cells?

7. Why was cold water used in this exercise instead of warm water? Hint: Think about
enzymatic reactions.


8. Why does the DNA rise to the top after adding the 91% isopropyl alcohol?

9. What part of the cell did the DNA come from?

10. How is DNA extraction useful to scientists?

11. Describe how a large DNA molecule is enclosed compactly within the nucleus of a cell.