Bio-Mechanical is it more than just a description of Geigers art?

I know the term "bio-mechanical" has been thrown around a lot. But other than it being the artistic theme of Geigers Art, what evidence is there that the Xeno is some kind of Borg/cyborg bio-techno hybrid? What does that even mean? Combo of metal/organic living tissue? Something beyond carbon based? I bring this up because from what I've seen, the Xeno breath, bleed, reproduce, and die. They have flesh, saliva, blood, skin, whatever form it actually is. What we don't know are what those tissue/things are made of in the creature itself. Unknown element? Something beyond DNA? DNA + something else? For all we know, the Xeno creature is some kind of microscopic composition of nano-robots simulating what we are used to thinking of as LIFE. But really the human body isn't different than a "high" developed robot in a grand sense meaning if you could simulate every organ, neuron, cell or dare I say DNA, chromosomes etc with metal, self repairing microprocessors, and synthetic blood, would that "thing" be alive? Artificial Intelligence if we create it, is it alive? If the computer learns, and the "brain" feels does it not have a soul if it's made of silicone? Now take that to another level with a combination of both carbon and silicone, artificial and living, synthetic and organic fused together. Is that Bio-mechanical? We don't know what this Xeno or Xeno technology is, or even if the alien goop was created. Maybe they found it, and tried to comtrol it. Maybe the engineers, we're trying to play god and really messed up! I hope we find out, and explore these sorts of "alien" concepts. Pun intended. There is a good chance the humans won't be Prometheus. There is just as good of a chance that the Engineers, and SJ' attempted to discover the meaning of life, and started messing with things they shouldn't have, and destroyed their own civilization. They are now having their livers chewed up for eternity! And.... Humans are about to make the same mistake....... genetic engineering, cloning anyone?