Steroid Hormones Are Large Communication Molecules That Are Modified Cholesterol

Multiple Choice

Steroid hormones are large communication molecules that are modified cholesterol molecules. How do you think they enter a cell?

A) Their size probably allows them to diffuse through the plasma membrane.
B) Their lipid nature probably allows them to diffuse through the plasma membrane.
C) Their protein structure probably allows them to diffuse through the plasma membrane.
D) They must require a protein transporter, because the plasma membrane is completely impermeable to molecules.