Final answer:
The lysis buffer used for RNA extraction contains a detergent solution that helps break open the cells. Enzymes in the lysis buffer break down unwanted macromolecules, and alcohol is used to precipitate the DNA.
Step-by-step explanation:
The lysis buffer used for RNA extraction contains a detergent solution that helps break open the cells. This lysis buffer is mostly made up of a detergent which helps break apart the lipid molecules in the cell and nuclear membranes.
Additionally, enzymes like proteases break down proteins and ribonucleases (RNases) break down RNA. Finally, alcohol is used to precipitate the DNA.