Hello Aspirant..

Biotech is the application of chemistry techniques to alter the contents of cells. The goal of biotech is to employ technology to modify biological materials. Biophysics is the application of physics techniques and concepts to the study of biological systems. This ranges from very applied (e.g., medical physics - creating imaging devices such as MRIs or radiation dosimetry for cancer therapy) to somewhat abstract (using statistical mechanics to predict how proteins fold) to very abstract (using statistical mechanics to predict how proteins fold) (studying how birds distribute themselves in a flock and fish in a school).

I hope this information helps.

Regards,