Why is octopus blood blue?

Why is octopus blood blue?

Why is octopus blood blue?

Octopuses and horseshoe crabs have blue blood because the protein transporting oxygen in their blood, hemocyanin, contains copper, instead of iron, making their blood appear blue rather than red. Hemocyanin is much bigger than hemoglobin and can bind 96 oxygen atoms.

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  • 2024-02-11 17:01:52
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Why is squid blood blue?
Squid blood is blue, not red as in humans. This is because squid blood contains a copper-containing compound called haemocyanin. In humans, the blood is red and contains the iron compound haemoglobin.
2024-02-06 11:26:40


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Share on Pinterest It is a myth that deoxygenated blood is blue; all blood in the human body is red. Human blood contains hemoglobin, which is a complex protein molecule in red blood cells. Hemoglobin contains iron.
2023-01-25 15:36:05

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