1. Introduction 2. Graphene-based Transducers and Sensing Platforms for Biosensors 3. Bio-FET based biosensors 4. Nucleic Acid-based Biosensors 5. Protein-based Biosensors 6. Energy Storage Devices 7. 3D Conducting Ink 8. Flexible and stretchable electronic devices 9. Merging tissue and electronics; Future prospective and challenges 10. Commercial prospective of graphene based biomolecular electronic devices and challenges