Place the following events of fertilization in the correct chronological order.
(1) Sperm contacts the cumulus mass.
(2) Proteolytic enzymes are released from the acrosome.
(3) Sperm contacts the plasma membrane of the ovum.
(4) Sperm passes through the zona pellucida.
(5) Sperm increase ATP production.
A. 5,1,2,4,3
B. 1,5,4,3,2
C. 1,2,4,3,5
D. 5,2,4,3,1
E. 3,5,2,1,4
A. 5,1,2,4,3
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a. true b. false