Gonads: Hormonal Regulation. Sex hormones may be regulated by other hormones, by glands and organs, and by a negative feedback mechanism. Hormones that regulate the release of other hormones are called tropic hormones. Gonadotropins are tropic hormones that regulate the release of sex hormones by gonads.onads. Gonads are the male and female primary reproductive organs. The male gonads are the testes and the female gonads are the ovaries. These reproductive system organs are necessary for sexual reproduction as they are responsible for the production of male and female gametes.
A brand new Bob Books boxed set featuring 12 easy-to-read stories! Great for kindergarten and first grade readers, this boxed set includes twelve mini-books. This set is the perfect stepping stone to independent reading since it contains four level A books, four level B's,two level C's, and two level D's. Read More.
This is a great app for my 4.5 year old blossoming reader! We are using the first set of BOB books to start her off on reading and this game is a nice supplement. She likes the characters from the books, and I like how the levels progress to add difficulty in nice baby steps (i.e.