The document discusses key biomolecules and their properties, including their structures, functional groups, reactions, and stereochemistry. It covers common biochemical molecules like alkane, alkenes, alcohols, carbonyls, carboxylic acids, amines, and their characteristic reactions such as addition, oxidation, esterification. It also discusses 3D molecular structures and stereoisomers and how reaction specificity can be related to stereochemistry. The document provides an overview of important organic chemistry concepts as they relate to biochemistry.