Question

How many of the following hormones do not enter the target cell?

Iodothyronine, Testosterone, Estradiol, insulin, Glucagon

Answer 1

Hormones that do not enter the target cell

1. Protein hormones include insulin and glucagon.
2. They interact with membrane-bound hormone receptors and produce second messengers because they are water-soluble.
3. As a result, these hormones aren't directly absorbed by the target cell.
4. Hormones such as iodothyronines, testosterone, and estradiol (oestrogen) interact with hormone receptors within cells (intracellular receptors).
5. As a result, they reach the destination cell.