How many of the following hormones given below will interact with the membrane-bound receptor?
Thyroxin, epinephrine, progesterone, relaxin, estrogen:
Three
Two
Five
One
Out of the given hormones, only two hormones will interact with membrane-bound receptors. These two hormones are thyroxine and epinephrine.
Thyroxine is a thyroid hormone that interacts with membrane-bound receptors to regulate metabolism and growth. Epinephrine, also known as adrenaline, interacts with membrane-bound receptors in response to stress, increasing heart rate and blood pressure, among other effects.
Progesterone, relaxin, and estrogen are steroid hormones that interact with intracellular receptors rather than membrane-bound receptors. Hence, the correct answer is option 2.