Biological Pigments
- Heme/porphyrin-based: chlorophyll, bilirubin, hemocyanin, hemoglobin, myoglobin
- Light-emitting: luciferin
- Carotenoids:
- Hematochromes (algal pigments, mixes of carotenoids and their derivates)
- Carotenes: alpha and beta carotene, lycopene, rhodopsin
- Xanthophylls: canthaxanthin, zeaxanthin, lutein
- Proteinaceous: phytochrome, phycobiliproteins
- Polyene enolates: a class of red pigments unique to parrots
- Other: melanin, urochrome, flavonoids
Read more about this topic: Plant Pigments
Famous quotes containing the word biological:
“I am fifty-two years of age. I am a bishop in the Anglican Church, and a few people might be constrained to say that I was reasonably responsible. In the land of my birth I cannot vote, whereas a young person of eighteen can vote. And why? Because he or she possesses that wonderful biological attribute—a white skin.”
—Desmond Tutu (b. 1931)