Which two kinds of molecules combine to form cell membranes?

The kind of molecules which combine to for cell membrane:

is this a psat question, if so do not cheat try your best.

regents of the university of california v. bakke, 438 u.s. 265 (1978), was a landmark decision by the supreme court of the united states. it upheld affirmative action, allowing race to be one of several factors in college admission policy.