What EXACTLY happens when an egg and sperm fuse?

Question

I already know plenty about it so don't give me the simple answers like "the sperm uses an enzyme to break the outer layer of the egg and then it goes in and combines the chromosomes with the egg's chromosomes..." I already know that. I want to know exact chemical processes as specific as can be understood. No this isn't homework, but I'd really like to know.

VERY SPECIFIC ANSWERS ONLY!!!

Answer 1

I like to describe things very clearly usually, you can check out my answers. But I'm too tired to go into any more detail than the person who posted on wikipedia, so here you go.

http://en.wikipedia.org/wiki/Acrosome_reaction