Nucleus, ribosomes, endoplasmic reticulum
Ribosomes, centrioles, cytoplasm, cell membrane
Nucleus, cell membrane, golgi bodies, mitochondria
Endoplasmic reticulum, chloroplasts, mitochondria, cell wall
Go in the cell because the salt would attract it.
Go out of the cell.
Contractile vacuoles pump out excess water
They generally do not come in contact with envrionments very different than that inside the cell
They have cell walls so the interior and exterior do not come in contact with one another