Transfer subject credit is listed at https://www.assist.org .
While transfer credit units to UC are limited (no more than 70 semester units of lower division transfer courses), all transfer courses can count for subject credit.
For general UC purposes, grades in passed transfer courses from non-UC schools do not count toward GPA calculated at UC. However, there may be a few cases where declaration of major by transfer students considers grades earned at prior colleges when those grades were in major prerequisites.
Medical schools will count all college courses and grades from all colleges for the purpose of applying to medical school and calculating overall and BCPM GPAs.