Question

The site which responds to the hormone? ​

Answer 1

According to toppr

Receptors are specific proteins located on target tissues to which specific hormones bind to produce their effect.

Binding of a hormone to its receptor leads to the formation of a hormone-receptor complex. Formation of Hormone-Receptor complex leads to certain biochemical changes in the target tissue.

Hence Receptor site responds to a hormone.

So, the correct answer is 'Receptor'.

Not my own words, I have cited so I am not plagerizing

Explanation: :)

Answer 2

Most hormones circulate in blood, coming into contact with essentially all cells. However, a given hormone usually affects only a limited number of cells, which are called target cells. A target cell responds to a hormone because it bears receptors for the hormone.