The book is aimed at providing an exposure to some important topics which are generally not covered adequately in formal courses in biotechnology. It informs the readers about: How micro-fluidics are proving useful in enzyme kinetics. Chemi-proteomics; combinatorial chemistry and high-throughput screening in the context of drug discovery. How enzymes can be used with gaseous substrates? How to source more robust enzymes from marine resources for diverse applications? Why some nano-materials can be chiral? Synthesis of diverse quantum dots as powerful fluorescent probes in biology. How basics of surface chemistry and immunology are vital in dealing with endemics/pandemics like Covid-19.