Place the following events of the acrosomal reaction in the correct chronological order.(1) The acrosome releases hydrolytic enzymes.(2) Sperm-binding proteins on the membrane bind the sperm.(3) Sperm nucleus enters the egg.(4) Sperm and egg plasma membranes fuse.(5) Sperm contacts the egg's jelly coat.
A. 5,1,2,4,3
B. 5,2,4,3,1
C. 1,5,4,3,2
D. 3,5,2,1,4
E. 1,2,4,3,5
Answer: A
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