Question

Estrogen, a hormone, is released by the ovaries. Once released, it travels to cells where it has an influence on sexual development. In order for estrogen to achieve its purpose, it must

A. travel using a transport protein to cross the cell membrane.
B. travel through the cell membrane and bind to an intracellular receptor inside. C. Estrogen does not need to cross the cell membrane to get to the nucleus.
D. bind to a membrane receptor on the cell's surface.

Answer 1

Travel through the membrane and bind to an intracellular receptor inside.

Step-by-step explanation:

for it to get its "message" across, it needs a way to communicate that message. Receptors are a form of cell communication and can spread the word in a way. Almost like how rumors are spread, the estrogen needs to create a sort of domino affect by communicating with the receptor, henceforth bonding with it.

Answer 2

The correct answer is B. travel through the cell membrane and bind to an intracellular receptor inside.

Estrogen is a type of steroidal hormone which plays many important role in female reproductive system and reproductive cycle.

Being steroidal in nature, it is fat-soluble due to which it easily passes across cell membrane (phospholipid bilayer) without the help of any carrier protein.

Within cell, it binds to the receptor present in the cytoplasm of the cell.

The receptor bound estrogen then passes across the nuclear membrane and binds to another receptor present on the chromatin.

There it produces its effects in terms of expressiveness of a particular gene.