Asked by Marlena Barcus on May 21, 2024
Verified
How does a sperm penetrate an egg?
A) Enzymes in the acrosome dissolve the zona pellucida.
B) The sperm binds to a receptor protein in the membrane and this initiates endocytosis.
C) The forward pressure of the flagellum forces it through the plasma membrane.
D) Spermatids are wedge-shaped and are chemically attracted to the inside cytoplasm of the egg cell.
E) The haploid sets of chromosomes match across the membrane and this triggers the membrane to dissolve.
Zona Pellucida
A thick, transparent coating surrounding the ovum of mammals, playing a crucial role in fertilization.
Acrosome
A cap-like structure over the anterior part of a sperm's head, containing enzymes that help the sperm penetrate the egg.
Sperm
Male reproductive cells designed for fertilization of the female ovum, contributing half of the genetic information to the offspring.
- Comprehend the importance and mechanisms of fertilization, encompassing the interaction between sperm and egg.
Verified Answer
NV
Nguyen Vu Minh Anh (K13_HN)May 21, 2024
Final Answer :
A
Explanation :
Enzymes in the acrosome of the sperm dissolve the outer layer of the egg, known as the zona pellucida, allowing the sperm to enter and fertilize the egg.
Learning Objectives
- Comprehend the importance and mechanisms of fertilization, encompassing the interaction between sperm and egg.