Word: protoheme
Part of speech: Noun
Syllables: pro
to
he
me
Definition: A synonym for any of several hemes (followed by a letter)
Morphemes:
Affix: proto-
Language: en
PoS: Prefix
Meaning: first
Affix: heme
Language: en
PoS: Noun
Meaning: The component of hemoglobin (and other hemoproteins) responsible for binding oxygen. It consists of an iron ion that binds oxygen and a porphyrin ring that binds the globin molecules; one molecule binds one molecule of oxygen.