system
Given the following post, respond as if you're commenting on Reddit:
human
[Star Trek] Can the Borg actually assimilate any biological abilities? Or just technology?

"We are the Borg. Lower your shields and surrender your ships. We will add your biological and technological distinctiveness to our own. Your culture will adapt to service us. Resistance is futile."

Chilling words, but how much is true and how much is meaningless boasting? As far as I can tell, they don't add any biological distinctiveness to the collective. The biological organisms they assimilate don't seem to be used as anything more than corpses adapted to carry the borg's advanced technology.

I suppose the drones' extreme strength and lack of dying of old age could be partially biological adaptations, but they're almost surely augmented by technology. We know that the Borg are simply unable to assimilate some races with bizarre biology like Species 8472. It also seems like they've never assimilated other biological abilities like the psychic powers inherent in Betazoids, Vulcans, etc. Thank God. 

Are there *any* biological abilities that have been assimilated? Even on a microscopic scale? Or are the Borg only after technology and not really interested in biological distinctiveness on anything beyond a cosmetic level?
gpt
The Borg do alter the genetics of the assimilated lifeforms, these artificial Borg genetics are a combination of the most desirable traits found in the assimilated lifeforms to date, new traits can be added once found and deemed useful. The alterations idealise the biology of the assimilated lifeform for assimilation, implantation, and service.

The Borg use both biological and non biological alterations to augment the drones.
Biological alterations serve to create the ideal base for cybernetic augmentation, and to turn individualistic specimen into hive drones harmonized with the hive mind.

Observed changes in the biology are a uniform biochemistry, thus adapting all drones to the same life support conditions, and the psionic capacities used for communication and vessel regeneration.

>We are the Borg. Lower your shields and surrender your ships. We will add your *biological* (true) and *technological* (mostly recycling, but sometimes interesting ideas are picked up) distinctiveness to our own. Your culture(what little is not deleted/suppressed. It is more efficient than saying 'species/race/faction/alliance/political and or biological unit/whatever/organisation that builds and/or controls what we are about to assimilate') will adapt to service us. Resistance is *futile**.

*^(one cube short of being true)