SAT Subject Tests have not been officially called SAT II for many years.
The SAT Subject Tests are supposed to cover high school level material, so high school biology and chemistry (not necessarily AP) should be enough for those ones. But math level 2 should be taken after precalculus and trigonometry. Students who will complete algebra 2 in 11th grade are supposed to take math level 1, which covers up to algebra 2.
https://collegereadiness.collegeboard.org/sat-subject-tests/subjects/science/biology-em
https://collegereadiness.collegeboard.org/sat-subject-tests/subjects/science/chemistry
https://collegereadiness.collegeboard.org/sat-subject-tests/subjects/mathematics/mathematics-2
https://collegereadiness.collegeboard.org/sat-subject-tests/subjects/mathematics/mathematics-1