Question

Hormones are mainly responsible for cell signalling ?yes,no,why​

Answer 1

Answer:A number of small hydrophobic signal molecules diffuse directly across the plasma membrane of target cells and bind to intracellular receptor proteins. These signal molecules include steroid hormones, thyroid hormones, retinoids, and vitamin D.

Answer 2

Answer:

Steroid hormone receptors are found in the nucleus, cytosol, and also on the plasma membrane of target cells. They are generally intracellular receptors (typically cytoplasmic or nuclear) and initiate signal transduction for steroid hormones which lead to changes in gene expression over a time period of hours to days.