Yes. Though sometimes they happen simultaneously (at the same exact time), they are not the same. Breaking your hymen means you have torn the thin membrane of skin within the vaginal walls, and...
it has no purpose once you are born. It's a remnant from when the vaginal opening was completely covered to protect the reproductive parts when you were in the womb.
your hymen is a piece of skin that partly covers the entrance to the vagina.
so its inside the vulva, (outer lips) and just inside the inner lips, (vagina)
if you want to see what a vagina looks...
The main chemical structure difference in purines and pyrimidines is purines have a 5 sided C and N based ring as well as a 6 sided C and N based ring structure. Pyrimidines only have the 6 sided C...