What is DNA? DNA is a molecule that contains the genetic code for our proteins. The students in the Grade 11 Biology class were actively lysing strawberry cells to extract and isolate DNA from the nuclei of strawberry cells. The scientists in training first used detergent to break into the cell membrane then lastly used ethanol alcohol to precipitate the DNA from solution. A sample of DNA was collected and observed under the microscope. The students recorded many observations while asking several inquiry questions throughout the DNA investigation. Everyone has been investigating the genetic code and the experiment was a great opportunity to observe DNA in living cells.