I am trying to learn about basic cell biology, and have what is probably an extremely simple question.
So this is how I understand it so far: Proteins are made from amino acids. This process is called protein biosynthesis, which is carried out by the ribosomes. So proteins are made by the ribosomes in every single cell.
So are the proteins made by the ribosomes to stay in the cell? Or can a protein move to other cells, and if so, what's the reason behind it?