Question

Which of these can pass easily through cell membrane of target cells and bind to internal receptors?

• A. Thyroxine, insulin
• B. Somatostatin, Oxytocin
• C. Insulin, glucagon
• D. Cortisol, testosterone

Answer 1

The correct option is D Cortisol, testosterone

A. Thyroxine, insulin hormones are protein hormones.

B. Somatostatin, oxytocin are protein hormones.

C. Insulin, glucagon are protein hormones.

D. Cortisol, testosterone are steroid hormones.

Steroid hormones are made up of fats and are not soluble in water, hence they can easily pass through the cell membrane.

So, the answer is Cortisol, testosterone.