Question

Which of the following are properties of steroid hormones? I) Steroid hormones are lipid soluble and easily cross the phospholipid bilayer. II) Steroid hormones usually exert their effects on target cells through membrane receptor proteins. III) Steroid hormones act on cells close to where they were produced. IV) Steroid hormones regulate gene transcription by binding to intracellular receptor proteins.

Answer 1

The correct answer is option I) Steroid hormones are lipid soluble and easily cross the phospholipid bilayer.

The steroid hormones are made up of steroid molecules, the steroid molecules are hydrophobic and lipid soluble. This property makes help the steroid molecule to cross the phospholipid bilayer membrane easily. The steroid molecule has a direct influence on the genome transcription, they act by binding with the DNA as a transcriptional factor.