Life is very much about density gradients. Ion channels, osmotic pressure, and so on.
40% of the cytoplasm is proteins (by volume), which is remarkably high, considering a naive lattice packing is just 34% (the tetrahedral lattice with a density of).
Also interesting things, just for scale: see a bacterium and a cell nucleus: https://www.youtube.com/watch?v=mdhk_-o8_n8
And an actual protein diffusion measurement from inside a nucleus (via light emitting proteins): https://www.youtube.com/watch?v=cDxUmCPxP_E
So, we're still some time from getting a "real" picture of the nucleus. Mostly because it's so dense.
(Here's a video about single particle tracking on the plasma membrane https://www.youtube.com/watch?v=dlq3kkbskaA and the nucleus is at least a magnitude more dense/busy.)
Life is very much about density gradients. Ion channels, osmotic pressure, and so on.
40% of the cytoplasm is proteins (by volume), which is remarkably high, considering a naive lattice packing is just 34% (the tetrahedral lattice with a density of).