Hello,

You can refer Pathfinder books for life science by Kumar Pranav and Mina Usha,  other than this some of the best books for preparation of MSc Applied Microbiology are textbook for microbiology by prescott, igenetics by peter russell, immunology by kuby, medical microbiology by ananth narayan, other than this go through previous year papers at http://bhuonline.in/old-qus-paper-2019.html , this will make you familiar wth exam pattern, marking, important topics etc, through consistent practice you can analyze your level of preparation in terms of strength and weakness, and it will also improve your speed, and time management skills.