Thyroxine, a hormone produced in the thyroid gland in humans, contains:
Fluorine
Bromine
Iodine
Chlorine
Name the substance which is needed continuously by the thyroid gland to make thyroxine hormone.
Which halogen element is necessary for the making of thyroxine hormone by the thyroid gland ?
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