Hormone Structures?

Hi everyone -

I'm going over the reproduction and endocrinology chapters in BR right now. Some of the practice passages require you to know the structures of the different hormones - cortisol, testosterone, etc..

Is this something I should memorize for the exam, a la the amino acids? Or is this Berkeley Review being tough and not representative of material I will need to have memorized for the MCAT? Obviously knowing hormone classes is important, but not sure about specific structures.