Which of the following best describes the purpose of the alcohol?

Question

A. Clean the impurities from the wheat germ.
B. Break down the enzymes in the nucleus that affect the DNA.
C. Open up the nucleus so the DNA can be released.
D. Separate the DNA out of the solution so it can be seen.

Answer 1

D is the answer

Answer 2

D. The DNA is soluble in water, so you can't see it in the mixture you have made during the lab. When you pour the ice cold alcohol on top, the DNA comes out of solution. Little air bubbles that cling to the DNA lift it up into the alcohol.