fusion of sperm to egg plasma membrane involved in single fertilization
biological_process
The binding and fusion of a sperm, with the plasma membrane of the oocyte as part of the process of single fertilization. In sperm with flagella, binding occurs at the posterior (post-acrosomal) region of the sperm head. [GOC:dph, GOC:jl, http://arbl.cvmbs.colostate.edu/hbooks/pathphys/reprod/fert/fert.html]
The membrane that surrounds the acrosomal lumen. The acrosome is a special type of lysosome in the head of a spermatozoon that contains acid hydrolases and is concerned with the breakdown of the outer membrane of the ovum during fertilization. [GOC:dph]