Exactly. Human cells are living units in themselves, and so will continue to function for a while after the death of the organism. It doesn't mean that this act

Exactly. Human cells are living units in themselves, and so will continue to function for a while after the death of the organism. It doesn't mean that this activity has a "purpose" (to the degree that we can say any biological activity has a "purpose", which is to say only metaphorically).