Assume you are studying a protein that is embedded in the plasma membrane of a cell. After labeling the molecule with a fluorescent tag it become clear that it is moving. To examine this you plot the average displacement squared versus time. How would you interpret the following results? In general terms, can you give a physical explanation?
1.) Merely a Linear Graph similar to Y=X
2.) Graph where the slope is rising as time increases similar to Y = 2^X
3.) Graph where slope is declining as time increases similar to Y = -2^X