Ignore all the posts above stating that the course does not count for BCPM.
So long as you consider the course to be more aptly described as "neuroscience" than "psychology," the course falls under biological sciences, and thus counts toward your BCPM GPA for AMCAS purposes. This is irrespective of which department offers the course; AMCAS' help page states this pretty clearly. This is an excerpt from the help page:
Behavioral & Social Sciences (BESS)
· Anthropology
· Economics
· Family Studies
· Psychology
· Sociology
Biology (BIOL) - BCPM
· Anatomy
· Biology
· Biophysics
· Biotechnology
· Botany
· Cell Biology
· Ecology
· Entomology
· Genetics
· Histology
. Immunology
· Microbiology
· Molecular Biology
· Neuroscience
· Physiology
The biopsychology courses I took at my home institution were part of the neuroscience minor, and I assume yours would be similar in content. They're certainly more neuroscience than psychology, and should thus be appropriately labeled as biological sciences on your AMCAS.