試題詳解

13. The midpiece of a sperm cell is to
(A) fuse with the jelly coat of the egg cell.
(B) carry the sperm，s nucleus.
(C) carry the sperm's acrosomal material.
(D) generate fbe! that propels die sperm.
(E) carry enzymes that are released to form a hole in the egg's jelly coat when tiie sperm encounters an egg.