Which hormones are made of amino acids and do not cross cell membranes easily?

A) Steroidal
B) Nonsteroidal
C) Prostaglandins
D) Gonadal
E) Adrenal

Amino Acids

Organic compounds that combine to form proteins and are important in biology.

Steroidal

Pertaining to steroids, a large class of organic compounds with a characteristic molecular structure that includes many hormones, alkaloids, and vitamins.

Cell Membranes

The semipermeable membrane surrounding the cytoplasm of a cell, responsible for controlling the movement of substances in and out of the cell.