Question

Which chemical class of hormones is not matched correctly?a) nitric oxide - lipid solubleb) steroids - lipid solublec) antidiuretic hormone - lipid solubled) T3 and T4 - water solublee) catecholamines - water soluble

Answer 1

d) T3 and T4. T3 and T4 are poorly soluble in water, and more than 99% of the T3 and T4 circulating in blood is bound to carrier proteins. The main carrier of thyroid hormones is thyroxine-binding globulin, a glycoprotein synthesized in the liver.