Assertion: sperm | /r/CapableOf | penetrate the zona pellucida
Facets:
value: with the egg plasma membrane
type: OTHER
Source sentences:
text: The head region contains a cap-like covering called an acrosome that contains enzymes that help the sperm cell penetrate the zona pellucida, the outer covering of an egg cell membrane.
text: After the sperm penetrates the zona pellucida, part of the sperm's cell membrane then fuses with the egg cell's membrane, and the contents of the head diffuse into the egg.
text: Sperm cells must undergo the acrosome reaction before they can penetrate the zona pellucida and fuse with the egg plasma membrane.