[Lavkeshsharma]

Im BSc. Biotechnology student I want to know that I'm eligible for gate paper.

The following categories of candidates are eligible to appear in GATE:
Bachelor degree holders in Engineering/ Technology/ Architecture (4 years after 10+2) and those who are in the final or already completed.

Master degree holders in any branch of Science/ Mathematics/ Statistics/ Computer Applications or equivalent and those who are in the final or pre-final year of such programmes.

Candidates in the second or higher year of the Four-year Integrated Master degree programme (Post-B.Sc.) in Engineering/ Technology
OR in the third or higher year of Five-year Integrated Master degree programme and Dual Degree programme in Engineering/ Technology.

So you are not eligible for appearing in GATE. You can appear for GATE after MSc.