Question

You add a fluorescent antibody to a cell surface protein to a dish of cells. Looking at an individual cell under the microscope the entire surface of the cell is fluorescent. You then hit the cell with a brief pulse from a laser which bleaches out part of the fluorescence on the cell. Over time you notice that the entire surface of the cell becomes fluorescent again. What is the best explanation for this observation?.

Answer 1

Answer: Proteins from parts of the cell membrane that were not bleached with the laser diffuse into regions of the membrane that were bleached.

Step-by-step explanation: