Question

The acrosome of the sperm is formed by
(a) Golgi complex
(b) Cytoplasm
(c) Nucleus
(d) ER

Answer 1

Hint: The acrosome is an organelle which resides at the anterior tip of the head of the sperm cells of animals including humans.
They are large lysosome-like vesicles located on the nucleus of the spermatozoa.

Complete answer:The acrosome is a membrane-bound organelle present in all eutherian mammals, located at the anterior tip of the head of spermatozoa.
This cap-like structure that resembles lysosome-like vesicles contains digestive enzymes such as hyaluronidase and acrosin that helps in penetration of zona pellucida, the outer membrane of the ova during fertilization.
The discharge released by the Golgi bodies of the sperm cells migrates to the forming acrosome.
At their surface, these vesicles fuse, with the acrosomal membrane, helping growth of acrosome.

Although their location is in the nucleus, they are formed by the cell organelle, ‘Golgi bodies or golgi complex’.

Note:Acrosome formation is a crucial step during fertilization.
Those sperm cells lacking acrosome formation of acrosome reaction fail to penetrate zona pellucida and thus, cannot complete the process of fertilization.
The increased number of glycoproteins in the membrane is attributed to its origin in the Golgi apparatus.