1. Describe at least two experiments and discuss how they helped determine that DNA and not protein was the hereditary material. 2. What is the importance of the fact that the sugar-phosphate backbone of DNA is held together by covalent bonds, and that the two strands are held together by hydrogen bonds.

3. Explain how the 3’ and the 5’ end of the DNA molecule affects DNA replication.

4. Telomerase activity can both shorten and lengthen cancerous cell lifespan. Describe how both are possible.

PLEASE HELP ME, ITS OKAY IF YOU ONLY ANSWER ONE :)