Question

A major difference in the mechanism of action between steroid hormones and peptide hormones is that

• A. Steroid hormones do not affect the synthesis of proteins whereas peptide hormones affect the activity of proteins already in the cell
• B. Target cells react more rapidly to steroid hormones than they do to peptide hormones
• C. Steroid hormones bind to a receptor protein whereas peptide hormones bind to G protein
• D. Steroid proteins affect metabolism, whereas peptide hormones affect the membrane permeability

Answer 1

The correct option is A Steroid hormones do not affect the synthesis of proteins whereas peptide hormones affect the activity of proteins already in the cell

Steroids hormone	Peptide hormones
It does not affect the synthesis of protein	Peptide hormone affect only protein
Target cell react more rapidly under the action of steroid hormone	Target cell react slowly
Steroid hormones bind the nuclear receptors (protein receptor)	Peptide hormone can bind to G protein
Steroid hormones affect metabolism.	Peptide hormone affects the membrane permeability. Because peptide hormone binds only on the receptor which is present on the plasma membrane.

So, the correct answer is ' Option A '