For Fertilization to Occur,many Sperm are Needed To

Question

For fertilization to occur,many sperm are needed to
A) break down the cell membrane of the oocyte
B) activate the polar bodies
C) stimulate the final division of the oocyte
D) separate the cells of the corona radiata so a single sperm can enter
E) destroy the polar bodies so they don't use nutrients

Accepted Answer

Many sperm are needed to separate the cells of the corona radiata so a single sperm can enter the oocyte. Once one sperm penetrates the oocyte, it triggers changes in the membrane to prevent any other sperm from entering. The individual sperm do not break down the cell membrane of the oocyte; rather, the sperm cell and the oocyte plasma membranes fuse. Sperm do not activate polar bodies, stimulate the final division of the oocyte, or destroy polar bodies.