From Wikipedia:
Generally, biophysics does not have university-level departments of its own, but has presence as groups across departments within the fields of molecular biology, biochemistry, chemistry, computer science, mathematics, medicine, pharmacology, physiology, physics, and neuroscience.
In Wikipedia the Biophysics category belongs to both Branch of Biology category and Applied and interdisciplinary physics category. My biophysics question needs mainly biology and computational science on the surface and physics on its core. Which community should I post to?