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No need to worry. If you have not appeared in any entrance examination. There are many Universities where you can apply for admission without any entrance exam.
MBA is more about the experience rather than education. The focus of all the good MBA programs is on leadership development, teamwork, peer learning, problem-solving, case analysis, gaining the right business insights, building effective communication skills, presentation, and interpersonal skills, etc.
I will be advise you to do your degree from Geeta University which is a well known university and that provides prime placement opportunity, outstanding exposure and professional enhancement training.
GU Panipat has a remarkable placement record as the institute invited leading companies to form different sectors. The faculty and placement team help students build industry-specific skills for better placement opportunities. Not only that but the university provides 100% assistance related to placements. The whole curriculum is structured in a way that enables students to develop both soft skills as well as hard skills.
There is a special placement cell at Geeta which works with great efforts to provide right opportunity to the students. Final year students are eligible to sit for campus placements. More than 100+ companies have visited Geeta University for campus placement and 2500+ students have been placed so far. Top recruiters- ITC, Bharti Airtel, ICICI Bank, Dabur, etc.

Biotechnology course is all about using concepts of biology for tweaking and modifying biological systems, cell structures, biological processes etc. So that they can be used in Engineering and Technology related applications to improve and enrich various sectors such as healthcare, food processing, agriculture, pharmaceuticals etc. And solve problems arising in these sectors. After a B.Tech degree, students can find jobs in pharmaceutical companies, research labs, biotech companies like Life Cell, Reliance Biotech, and many others and institutions in India. There are various industries that are engaged in developing and researching biological products and chemical industries. Besides, there is always demand for improvements in medicines and health products. Students in the research field tend to take up projects overseas, which is another lucrative option. I would like to recommend you some best universities for biotechnology course like:
Lovely Professional University
BITS Pilani
Delhi College of Engineering
VIT, Vellore
PSG Technology Coimbatore.

Most of the colleges conduct separate entrance exam for admission to BBA course. Some of the entrance exams conducted for BBA course are as follows:
AIMA under Graduate Aptitude Test UGAT is a national level examination conducted annually by All India Management Association (AIMA). Itis conducted to screen capable candidates for admission in various courses such as BBA BCA Integrated MBA, BHM B.Com etc. SET or Symbiosis Entrance Test is common test conducted by Symbiosis International University for admission in undergraduate courses in the fields of Law, General, Design, Engineering and Health Science. IPU CET 2017 (IP University Common Entrance Test) is a university level entrance exam conducted for admission to 60 undergraduate, postgraduate and research courses.

You must be aware of the NEET row for the past 2-3 years. Getting admission in MBBS is more of a business nowadays, merit takes a backseat. I assume you cannot pursue MBBS from a private college due to high tuition fee. If 2018 was your second drop, it would be even more difficult for you to score good enough next year because a person cannot start the same thing over and over again. Take my advice, think of something else, there are a whole lot of opportunities apart from MBBS. But, if you are really keen on doing MBBS/BDS, secure admission in any course like B.Sc. or B.A. and simultaneously prepare for NEET so that you may not waste one more year.
1 year back, I was in the same situation. Take time and think about your future. If you have potential, invest it in some other field so you may benefit. Make a wise choice and good luck.