T4 and T3 are hormones that are mainly transported in the blood.
A)monoamine; bound to thyroxine-binding globulin (TBG)
B)monoamine; unbound (free)
C)steroid; bound to transcortin-binding protein (TBP)
D)steroid; unbound (free)
E)catecholamine; bound to thyroxine-binding globulin (TBG)

Question

Quizplus · Accepted Answer

T4 (thyroxine) and T3 (triiodothyronine) are thyroid hormones, which are classified as monoamines. They are primarily transported in the blood bound to thyroxine-binding globulin (TBG).

T4 and T3 Are Hormones That Are Mainly Transported in the Blood