What are the similarities and differences in the movement of substances in the body of unicellular

What are the similarities and differences in the movement of substances in the body of unicellular and multicellular animals?

The similarity lies in the fact that transport manifests itself in both in the same ways. The difference lies in structure and morphology. For example:

1) transport systems of tubules and tubules filled with liquid or gases – in cells this is the endoplasmic reticulum, in organisms – tracheal systems (in insects) and the circulatory system;

2) movement with the help of ion pumps to different parts: in multicellular organisms between cells and inside them, in unicellular organisms – inside them and between the cell and the environment.