Science

Hi,
Well, I would recommend you to cover up for these grades with CAT percentile and a stellar CV.
It is advisable to gain enough extra-curricular experience and PORs before joining the institute as your peers will compete with you.
Do not give up on not so good grades. Rather, work through cracking CAT.
Good luck,
Narveer

You have following options in B.Tech with biology related subjects: biotechnology, bio-medical and bio-informatics. But you will require maths as an additional subject at +2 stage.

Hello, you can. GRE is not required in UK, as for TOEFL. Kindly check carefully with the universities as a number of universities in UK do not accept TOEFL and only requires IELTS.

Hi,
It depends on whether you want to take admissions in B.Com (Hons.) or in B.Com (Pass). If you want to take up B.Com (Hons.) then it's mandatory to have maths in class 12th.

Stock markets are full of finance jargon. Financial knowledge is a must to make your career in stock market. Try to pursue BBA, BBM or B.Com + Certifications from NSE or BSE. As far as criteria is concerned after +2, you can opt few courses of share market from NSE or BSE. To know more details, kindly visit the websites of NSE or BSE and https://Shiksha.com/courses/stock markets. All the best.

Hello Sujata,
Here you are confused about two different stream and field.
For B.Sc in nursing you need to complete 12th with PCB. This course is purely related with nursing and need deep knowledge of biology.
Another course you mentioned here is purely a management course so for this you does not need any knowledge of science.

The IIHMR group of institutions offered such courses with various specializations. Kindly visit the website of IIHMR (iihmr.org).