M.Sc

Yes, you are eligible.

Hi,
Nanotechnology is the branch of technology. It has a huge scope in the upcoming generations. It is the third the highest booming field when compared with IT and Internet. In India, Bangalore and Chennai are the manufacturing hub for IT and Medicine. The Indian government has already started Nanoscience and Nanotechnology initiatives and various funding agencies like the Department of Science and Technology.
Best of luck.

According to the admission process of Annamalai University, for integrated B.Sc + M.Sc in microbiology, the candidate has to register and apply online with required information. Then on the basis of personal interview of shortlisted candidates, selection is done.
Yes, you can go for direct admissions too.
For more information visit the link below:
https://googleweblight.com/i?u=https://www.shiksha.com/science/course/integrated-b-sc-m-sc-in-microbiology-annamalai-university-tamil-nadu-other-273540&hl=en-IN

Any degree that you do adds to your competence as well as strengthens the job claims. In you case, if you are already working with M.Sc. And B.Sc. This will enhance your claim in Higher Education. I suggest that you should do B.Ed that will be more beneficial for school teaching careers.