For the reconstruction of a membrane flow have extensive picture series of cells in which the membrane flow was blocked by inhibitors to be compared with untreated control cells. Such analyses have been carried out in a big way with animal cells. Plant data are sketchy so far but it emerges that quantitative differences in the rates of vesicular transport between the endoplasmatic reticulum and the dictyosomes exist. Moreover vary cells of different origins quantitatively. In electron microscopic images of the cells of higher plants can it be observed that, in contrast to the situation in animal cells, the Golgi-apparatus is less closely associated with the endoplasmatic reticulum.
Animal cells secrete a lot of protein, while plant cells secrete mainly hydrocarbons.
In membrane transport and in the transformation of one type of membrane into another can at least three steps be distinguished. The lateral movements of lipids and proteins. Metaphorically speaking could it be said that certain molecules are selectively pushed aside. The fusion of two membranes and the subsequent budding off of vesicles. The reverse process occurs, too.