Answer:
They can not live on their own
Explanation:
The main difference between cells and viruses is that viruses need another cell to infect so that they can reproduce. Cells on the other hand can reproduce on their own.
Explanation:
The purines are ribose and deoxyribose
I only have one reason but hope it helps!
Because without those bases pairing there <span>would be no structure of a DNA.</span>
B. a form of gene is the correct answer