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'''Biophysics''' is an interdisciplinary science that uses the methods of [[physical science ]] to study [[biological ]] systems<ref>Careers in Biophysics brochure, Biophysical Society https://www.biophysics.org/Portals/1/PDFs/Career%20Center/Careers%20In%20Biophysics.pdf</ref>. Studies included under the branches of biophysics span all levels of biological organization: from the molecular scale to whole [[organisms ]] and [[ecosystems]]. Biophysical research shares significant overlap with [[biochemistry]], [[nanotechnology]], [[bioengineering]], [[agrophysics ]] and [[systems biology]].

Molecular biophysics typically addresses biological questions that are similar to those in biochemistry and [[molecular biology]], but the questions are approached quantitatively. Scientists in this field conduct research concerned with understanding the interactions between the various systems of a [[cell]], including the interactions between [[DNA]], [[RNA ]] and [[protein ]] biosynthesis, as well as how these interactions are regulated. A great variety of techniques are used to answer these questions.