you just label the transport of low protein levels
Explanaron:
<span>The process when molecules tend to move from an area of high concentration to an area of low concentration is diffusion! I hope I helped :D</span>
D: a nucleus
the prokaryote cell has no nucleus and for that matter no other membrane bound organelle
A cat thinks that you are opening a can of cat food when it hears the can opener.
A dog shying away from a magazine or newspaper, if the owner has used one to swat the dog as punishment.
If humans are ok to use as examples, A child learning that a stove is hot by touching it.