There is no list of professors with openings. Instead you pick someone from this List of Bios faculty , which includes a description of their research and contact information. You ask them if they have a project and space in their lab for you. Professors aren't required to let undergraduates participate in their research; they do it because they enjoy working with students.
Training a student can be a big commitment of the professor's time and sometimes research money, so professors are interested in working with students. who are motivated, perseverant, and hard workers. Occasionally, the professor with whom a bios major does research credits is from another department, e.g., psychology, biochemistry, anthropology; but that professor has some research that is biological, and the professor agrees to your doing biology research credits with them.