Question

WHAT IS THE PRIMARY DIFFERENCE BETWEEN WATER-AND-FAT SOLUBLE HORMONES IN TERMS OF WHERE THEY WORK?a.water-soluble hormones bind to outside cells, whereas fat-soluble hormones enter cells and act thereb.water-soluble hormones enter the cells and act there, whereas fat-soluble hormones bind to the outside of the cellsc.both hormones carry out their actions at the same place on the celld.all of the above are correcte.none of the above are correct

Answer 1

Water soluble hormones, such as glycoproteins or peptide hormones, cannot cross the lipidic membrane. The cell receptors for this hormones are located on the surface of the cell membrane. So, this hormones have their main activity on the cell surface.

Fat soluble hormones, for example steroids (cortisol, testosterone, estrogen), can easilly pass through the cell membrane, the receptors for these hormones are found within the cell, in the cytoplasm and the nucleus. These hormones act directly by estimulating the transcription of DNA to produce determined proteins.

The correct option is a.