Alien bio-acid, does it have any plausibility?

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Discussion Overview

The discussion revolves around the plausibility of the xenomorphs from the Alien movies possessing biological features such as highly corrosive blood and claws capable of cutting through metal. Participants explore the theoretical implications of such traits in an organic lifeform, considering both biological and chemical aspects.

Discussion Character

  • Exploratory
  • Debate/contested
  • Technical explanation

Main Points Raised

  • Some participants question whether an organic lifeform could realistically produce a blood acid strong enough to damage its surroundings, as depicted in the films.
  • One participant suggests that if the xenomorphs' claws were coated with a special chemical, it might create a reaction capable of cutting through metal, although they acknowledge this is unlikely.
  • Another participant notes the existence of strong acids that can dissolve metals while being non-reactive with certain plastics, proposing that xenomorphs might have an organic polymer coating on their organs.
  • A participant points out that the finite reaction of acids with metals complicates the portrayal of the xenomorphs' blood in the films.
  • Discussion includes references to speculative analyses from the Anchorpoint Essays and the Aliens Colonial Marines Technical Manual, which explore the nature of the xenomorphs' blood and its potential chemical composition, including theories about hydrofluoric acid and its defensive role.
  • Clarifications are made regarding the physical capabilities of xenomorphs in the films, noting that earlier designs do not possess claws and that their ability to cut through metal is not depicted until later installments.

Areas of Agreement / Disagreement

Participants express a range of views on the plausibility of the xenomorphs' biological features, with no consensus reached on the feasibility of such traits in real-world biology or chemistry.

Contextual Notes

Limitations include the speculative nature of the discussion, reliance on fictional representations, and the absence of empirical evidence regarding the chemical properties of the xenomorphs' blood.

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In Aliens movies, the xenomorphs blood is such a strong acid, that if they are shot, they damage the surroundings.
Does it have any plausibility, that an organic biological lifeform could create such a strong acid, have claws that could cut through metal?
 
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If the Xhenomorphs claw could be naturally coated in a special chemical, said chemical could create a chemical reaction to "rip" the metal in half. The possibilities are very slim though.
 
There are very strong acids that do not react to substances like certain plastics but will however happily dissolve metal,wood ect...
Perhaps the Xenomorphs have some sort of organic polymer coating all of their organs.
 
Each mole of acid would react with a finite amount of metal, so the behavior of in-universe metals/alloys when they come in contact with the blood make little sense.
 
The Anchorpoint Essays speculates that the acid blood is either hydrofluoric acid, nitric acid, or enzymatic in nature (i.e. it's not actually acid.

The Aliens Colonial Marines Technical Manual has a section (in-universe) where scientists speculate on the "blood". The first thing pointed out is there is no proof the acid substance is used as blood. It could be a purely defensive feature. It also goes with the hydrofluoric theory or a hydrofluoric/hydrochloric combination. It goes on for quite a while. I just flipped through it. It also speculate on the hydrocarbon structure needed by the alien to support that. I'd be happy to report on that in more detail

The aliens in at least the first three movies can't cut through metal because barricades and doors are used for protection. The first time the the alien "tears" through metal is the fourth movie and they did that by sacrificing one of their own.

The first two alien designs don't have claws, they have sort of fused fingers and two opposable thumbs on each hand.
 
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