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Unformatted text preview: -when light hits the pigment it changes form from cyst to trans form. (changes shape)-goes back into trans form.some of retinal is destroyed.-Rhodopsin? Carotenoids- group of chemicals, some are converted to Vit A and some are powerful Anti oxidants.-precursor to Vit A o Beta carotene and alpha carotene o Beta cyptoxanthin-Antioxidants o Beta carotene and alpha carotene o Beta cryptoxanthin o Lycopene o Lutein and zeazanthin Vitamin A Sources Retinol comes from ANIMAL SOURCES-liver-fish-milk products-butter-eggs Carotenoids-dark green veggies-red/orange veggies-red/ orange fruits...
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- Spring '08