You fluorescently label the phospholipid head groups of a small number of phospholipids in the outer leaflet of the cell membrane to observe them over time with a microscope.At time zero,all the fluorescent label is concentrated in one spot.What will you observe at a later time point?
A) The fluorescently tagged phospholipids will still be together, concentrated in a spot.
B) The fluorescently tagged phospholipids will be spread out, but will still all be part of the outer leaflet.
C) The fluorescently tagged phospholipids will be spread out in the outer leaflet and some will have flip-flopped into the inner leaflet as well.
D) It is impossible to predict what will happen to the labeled phospholipids over time.
Correct Answer:
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