January 31, 2013

January 31st

Agenda:

1. DNA extraction from wheat germ

H.W.: None

Journal: Describe what happens to the chromosomes during mitosis.

Questions for lab (choose 3):

1. Why did we run this experiment on wheat germ?
2. What purpose did the agitation with hot water serve?
3. The wheat germ plumps up in hot water. Why? (hint: think about osmosis)
4. What purpose did the detergent serve?
5. After stirring the water/wheatgerm mixture, you add detergent. Identify the solute and solvent in this solution.
6. What purpose did the alcohol serve?
7. Draw and label the parts of a plant cell. Identify the parts of the cell that were affected during this lab.