Indicate true (T) and false (F) statements below regarding intracellular vesicle transport. Your answer would be a four-letter string composed of letters T and F only, e.g. TTTF
( ) The plasma membrane is stiffer and flatter than most intracellular membranes, and its deformation generally requires greater force.
( ) Large molecules such as collagen fibers of about 300 µm in length are highly packed and coiled to fit into normal COPII vesicles of about 80 nm in diameter.
( ) Rab proteins are recruited to membranes following activation by Rab-GEFs.
( ) A Rab and its effector are always on two different membranes that will then fuse.