Which of the following is not a steroid hormone?
Androgen
Estrogen
Thyroxine
Aldosterone
Leydig cells produce a group of hormones called
(a) androgens
(b) estrogens
(c) aldosterone
(d) gonadotropins
Which one term in each of the following includes the other three?
(a) thyroid, ductless gland, thymus, pituitary, ovary
(b) adrenalin, insulin, hormone, thyroxine, estrogen