How should I prepare for the entrance exam conducted by TIFR? Which is the best textbook for the same?

TIFR entrance is not very hard. To crack it, you need to do a little hard work. Make time table and according to that study. Go through all the topics given in the syllabus and make habit of revision. I would recommend to make a habit of studying from a single textbook I.e Lehninger or Stryer whiche