Hormones are essentially proteins, steroids, peptides and __________ .
Epinephrine
Progesterone
insulin
Estrogen.
Hormones or chemical messengers are essentially of four types:
A hormone responsible for normal sleep-wake cycle is
(a) epinephrine
(b) gastrin
(c) melatonin
(d) insulin
Which of the following is a mismatched pair?
(a) Adrenaline: pituitary gland.
(b) Estrogen: ovary.
(c) Pancreas: insulin.
(d) Progesterone: ovary.