The name 'second messenger' is given to

Choose the correct pair of hormones which interact with membrane-bound receptors.

$I.$ Autocrine hormones $II.$ Endocrine hormones $III.$ Paracrine hormones
Among them, which one is/are local regulator(s) and do not travel through the blood?

Hormones produce their effect on target tissue by binding to specific proteins called as

Action of the peptide hormone on a target cell is mediated by

Which of the following statements are applicable to hormones?
$I -$ Neural messengers
$II -$ Intercellular messengers
$III -$ Produced in trace amounts
$IV -$ Nutrient chemicals
$V -$ Released into the blood after production.