This training module provides students with a review of those aspects of chemistry, organic chemistry and biochemistry. Which is foundational content required for the study of and competencies within pharmacology. In general chemistry, the concepts of chemical compounds and bonds, and atomic theory will be reviewed. In organic chemistry, the concepts of organic compounds, bonds and valences will be reviewed. In biochemistry, biomolecules of proteins, carbohydrates, nucleic acids and lipids, as well as chromosomal theory and the genetic code, enzymes and metabolism will be covered. This training modules will review and update student’s understanding of critical principles in biochemistry, including: chemical compounds and bonds (covalent, ionic, hydrophilic/hydrophobic, hydrogen bonds); atomic theory; organic compounds, bonds and valences; biomolecules (proteins, carbohydrates, nucleic acids and lipids); enzymes and metabolism;transport processes in neurons; and biochemical mechanisms of neuronal signaling.