A protein that is part of the synaptonemal complex (SC)
The correct answer should be the endocrine system.
Hormones are secreted by endocrine glands in endocrine systems. Opposite of this would be the exocrine system consisting of exocrine glands.
Sperm cells are stored an matured in the Epididymis
There are not any statements
Potable water is water that is safe to drink