Everything in our body and the world around us has a structure to fit its function. For example, scissors are sharp and pointed so they can cut. Our small intestines have little projections called villi so that they have lots of space to absorb as many nutrients from the food we eat as possible.
A. What about the structure of DNA makes it is easy for helicase to unzip DNA for replication, or for RNA polymerase to unzip for transcription?
B.What about the structure of the backbone of DNA makes it strong and keeps it from ever breaking/falling apart?