Glossary · term

Haemoglobin

Biology

Aliases
hemoglobin, haemocyanin
Domain
Biology

Definition

The iron-bearing protein that carries oxygen in blood, holding it loosely enough to let go where it is wanted. Molluscs and arthropods use copper-based haemocyanin instead, which is why their blood is blue.

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From the Glossary database in Notion, last edited 2026-08-25. This page is the row, rendered by the build; nothing on it is written by hand.