Place the following in the correct order:
1) aided by enzymes on their surface, sperm penetrate the cells of the corona radiata
2) acrosomal reactions are triggered when sperm bind to receptors in the zona pellucida
3) syngamy occurs when a sperm cell binds to receptors on the oocyte's plasma membrane
4) acrosomal enzymes from many sperm digest through the zona pellucida
5) zygote is formed
A) 1, 2, 3, 4, 5
B) 1, 2, 4, 3, 5
C) 4, 2, 1, 5, 3
D) 2, 4, 1, 5, 3

Question

Place the following in the correct order: 
1) aided by enzymes on their surface, sperm penetrate the cells of the corona radiata
2) acrosomal reactions are triggered when sperm bind to receptors in the zona pellucida
3) syngamy occurs when a sperm cell binds to receptors on the oocyte's plasma membrane
4) acrosomal enzymes from many sperm digest through the zona pellucida
5) zygote is formed
A) 1, 2, 3, 4, 5
B) 1, 2, 4, 3, 5
C) 4, 2, 1, 5, 3
D) 2, 4, 1, 5, 3

Quizplus · Accepted Answer

The correct sequence starts with sperm penetrating the corona radiata (1), followed by the acrosomal reactions triggered by binding to the zona pellucida (2), then acrosomal enzymes digesting through the zona pellucida (4), leading to a sperm cell binding to the oocyte's plasma membrane (3), and finally the formation of a zygote (5).

Place the Following in the Correct Order