Question

Two types of vesides move in cll y ether normal diffusion (population 1) or diffusion with drift (population 2; drift is also called flow). Both vesicle populations have the same diffusion constant of D-0001 μm2/sec. The mean square displacement (MSD) of population 1 equals 0.6 um2 after 10 min, while that ofpopulation 2 equals 5 μm . a) Calculate the drift (also called flow speed) of the vesicles in population 2. b) Suggest a mechanism for the observed flow/drift of vesicle population 2 in the cells.

Answer 1