Which one of the following is a peptide hormone ?

Options

A. Progesterone
B. Thyroxine
C. Oxypurin
D. Insulin

Answer

B

Explanation

Thyroxine is an iodine-containing amino acid hormone produced by the thyroid gland.
Progestines are pregnancy hormones. An example of a progestin is progestone, resposibile for preparing the uterus for implantation of the fertilized egg. Many steroid hormones including progesterone itself, have played important role as birth control agents.
Insulin, a peptide hormone, has a perfomed inluence on carbohydrates metabolism. It facilitates entry of glucose and other sugars into the cells by increasing penetration of cell membranes and augmenting in blood and therefore insulin is commonly known as hypoglycemic factor.