The action of thyroid hormone on a target cell involves all the following steps except
A)binding to a hormone receptor in the plasma membrane.
B)transport into the target cell.
C)binding to a cytoplasmic receptor protein.
D)activation of a specific gene.
E)activation of a G protein.

Question

Quizplus · Accepted Answer

Thyroid hormone does not bind to a hormone receptor in the plasma membrane. Instead, thyroid hormone can enter the target cell and bind to a cytoplasmic receptor protein, leading to activation of a specific gene and subsequent changes in cellular physiology. Activation of a G protein is also not directly involved in the action of thyroid hormone.

The Action of Thyroid Hormone on a Target Cell Involves