Answer :
Hormone is a substance that directly involve in cellular communication within the human body.
Hormone is a substance that directly involve in cellular communication within the human body.
Explanation:
A hormone is a restrictive substance created in an organism and transported in tissue fluids like blood or sap to stimulate specific cells or tissues into action.
It is a synthetic substance with result thereto of an animal or growth regulator.
It is a person's sex hormones as control to influence behavior or mood.