Hello student yes biology student can get admission in Biotechnology engineering course but you must have physics chemistry and mathematics and biology.

To get admission in top colleges like NIT IIITS CFTIs you need to appear in jee mains and in advance if you're willing to take admission in IIT
ELIGIBILITY - Candidates must passed class 12 with physics chemistry and mathematics with minimum 75 percent marks aggregate from a recognized board.

For more updates refer to the link mentioned below
https://www.google.com/amp/s/www.careers360.com/courses/b-tech-in-biotechnology/amp

Feel free to comment if you have any doubt
Good luck