Since evolutionists claim they have no start point, would you agree that the first organic form it could address was probably single-celled?
Organic forms go much simpler than cells. But if you're talking about "life" then a cell would probably be the most basic since viruses probably came later.
Right now there's still hot debate among scientists about this between those supporting heterotrophic and those supporting chemoautotrophic. But some new research looks good in attempting to reconcile it.