Biochemistry - study of life at the molecular level
Collision Theory - according to this theory, for biochemical reactions to occur, there usually must be an optimal spatial arrangement between the reacting molecules.
Stereochemistry - the study of the interactions of molecules in three dimension
Stereoisomers - same four constituents bound to them, yet differ in the arrangement of constituent
Isomers - same chemical formula, but different bonding, shape, or orientation
Diastereomers - are stereoisomers that are not mirror images of each other
