Did AACOMAS instruct you to list it in your PS? That seems strange. I have a similar situation and checked the instruction book, which says:
"If you fulfilled your undergraduate institution’s English requirement with a course(s) outside of the English Department, list the appropriate course(s), up to six (6) semester hours, as English. Send a message to AACOMAS using the e-mail support system within the application explaining the course substitution and including a link to the course description in the online course catalog."
I emailed them within the application asking for clarification. I will update as soon as I hear back!
Perhaps there's also a way to note that your bio classes fulfilled your English requirements so that your sGPA is not affected..