Q. Which of the following hormones contains iodine?
A) testosterone
B) adrenaline
C) thyroxine
D) insulin
Explanation
[Solution from source] Thyroxine, secreted by the thyroid gland, is an iodinated derivative of tyrosine. Testosterone is a steroid, adrenaline a catecholamine and insulin a polypeptide; none contain iodine. Answer (3).
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.