3 ms·

Yes I think it must mean multicellular organism. I understand there are lots of unicellular organisms that don't use oxygen.

pfdietz 2y ago
Even with that proviso it's still wrong. These animals were found in 2010 to be living in a completely anoxic environment with 2.9 mM of sulfide(!). https://en.wikipedia.org/wiki/Loricifera https://en.wikipedia.org/wiki/Loricifera
- karmakaze 2y ago
  Lines up with this Nature 2010 article "Animals thrive without oxygen at sea bottom (Creatures found where only microbes and viruses were thought to survive.)"[0] which I don't have access to. [0] https://www.nature.com/articles/464825b https://www.nature.com/articles/464825b
- isoprophlex 2y ago
  Searching for YouTube videos of those anoxic, salt, toxic "brine lakes" is highly recommended. An alien sea within our oceans. Eg. https://m.youtube.com/watch?v=ZwuVpNYrKPY https://m.youtube.com/watch?v=ZwuVpNYrKPY
- SAI_Peregrinus 2y ago
  Not to mention plants (oxygen is a waste product for them), some fungi, etc. They're multicellular, but not animals.
  - Retric 2y ago
    A plant’s metabolism still needs to function even when the sun isn’t shining. So they consume oxygen at night, in their roots, etc. This is most apparent for the occasional parasitic plant without chlorophyll. https://en.wikipedia.org/wiki/Albino_redwood https://en.wikipedia.org/wiki/Albino_redwood
  - comicjk 2y ago
    Plants still perform respiration using oxygen. Photosynthesis lets them create their own sugars, but their process for using those sugars in the mitochondria is similar to how we do it. Plants release more oxygen than they consume because they grow: in order to grow they must pull CO2 from the air, use the C as building material (instead of respiration fuel), and dump the O2. https://www.pthorticulture.com/en-us/training-center/basics-of-plant-respiration https://www.pthorticulture.com/en-us/training-center/basics-...

pfdietz 2y ago

Even with that proviso it's still wrong. These animals were found in 2010 to be living in a completely anoxic environment with 2.9 mM of sulfide(!). https://en.wikipedia.org/wiki/Loricifera https://en.wikipedia.org/wiki/Loricifera

karmakaze 2y ago
Lines up with this Nature 2010 article "Animals thrive without oxygen at sea bottom (Creatures found where only microbes and viruses were thought to survive.)"[0] which I don't have access to. [0] https://www.nature.com/articles/464825b https://www.nature.com/articles/464825b
isoprophlex 2y ago
Searching for YouTube videos of those anoxic, salt, toxic "brine lakes" is highly recommended. An alien sea within our oceans. Eg. https://m.youtube.com/watch?v=ZwuVpNYrKPY https://m.youtube.com/watch?v=ZwuVpNYrKPY
SAI_Peregrinus 2y ago
Not to mention plants (oxygen is a waste product for them), some fungi, etc. They're multicellular, but not animals.
- Retric 2y ago
  A plant’s metabolism still needs to function even when the sun isn’t shining. So they consume oxygen at night, in their roots, etc. This is most apparent for the occasional parasitic plant without chlorophyll. https://en.wikipedia.org/wiki/Albino_redwood https://en.wikipedia.org/wiki/Albino_redwood
- comicjk 2y ago
  Plants still perform respiration using oxygen. Photosynthesis lets them create their own sugars, but their process for using those sugars in the mitochondria is similar to how we do it. Plants release more oxygen than they consume because they grow: in order to grow they must pull CO2 from the air, use the C as building material (instead of respiration fuel), and dump the O2. https://www.pthorticulture.com/en-us/training-center/basics-of-plant-respiration https://www.pthorticulture.com/en-us/training-center/basics-...