Oops, my comment about malaria being a metazoan was a brain fart. It is of course a protozoan.
As for your definition of a life form,
It is still flawed. You have completely ducked how it applies to obligate parasites that cannot reproduce in cell-free culture. Based on your response to my comment,
"There are, of course, relationships that that require another entirely different organism for reproduction."
You seem to think they are all viruses. That is simply wrong. Treponema pallidum is a bacterium, not virus, that has yet to be cultured in a cell-free medium.
John