Chapter 28, Problem 28.31AP

Interpretation Introduction

Interpretation:

Two examples for each of the three major classes of hormones has to be given.

Concept Introduction:

Amino acids: Amino acids are compounds having both $-N{H}_2$ and $-COOH$ groups in the specific alkyl chain corresponding to the each amino acid.

Hormones: Hormones are chemical messengers which are secreted by the cell in endocrine system and are transported along the blood to stimulate the target cells having the corresponding receptors.

Hormones are of three types,

1. 1. Amino acid derivatives: It is a derivative of an amino acid formed by the reaction at the side chain functional group, carboxylic acid group, amino group or by the replacement of a hydrogen atom by heteroatom.
2. 2. Polypeptides: Polypeptides are organic polymers having several amino acids attached to each other in a chain.
3. 3. Steroid: Steroids are a type of organic compound having a molecular structure with four rings connected to each other.