Question

Steroid hormones work as

• A. They enter into target cells and binds with speicific receptor and activates specific genes to form protein
• B. They binds to cell membrane
• C. They catalyse formation of cAMP
• D. None of the above

Answer 1

The correct option is A They enter into target cells and binds with speicific receptor and activates specific genes to form protein

Steroid hormones cause changes within a cell by first passing through the cell membrane of the target cell. Steroid hormones, unlike non-steroid hormones, can do this because they are fat-soluble. Once inside the cell the steroid hormone binds with a specific receptor found only in the cytoplasm of the target cell. The receptor bound steroid hormone then travels into the nucleus and alter the production of specific messenger RNA (mRNA), inturn affecting the production of the protein.