Hormones may be:

Which of the following are second messengers?
$I.$ Cyclic $AMP$
$II.$ $IP_3$
$III.$ $Ca^{2+}$
The correct option is:

Identify the correct receptors for the following hormones:
$\quad$ $\quad$ Peptide hormone $\quad$ $\quad$ Epinephrine

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.

Which one of the following is not a secondary messenger in hormone action?

Which group of hormones interacts with intracellular receptors?