Hello aspirant,

Yes you can do pg(post graduation) for better understanding and knowledge of the subject..

Here are some of the best colleges in India  for pg in biochemistry..

.The Oxford College of science, Bangalore

. Fergusson College, Pune

. Mithibai college,  Mumbai

.St Xavier's College, Mumbai

. Jaipur National University, Jaipur

. Mahatama Gandhi University, Kerala



Good luck.