As you might suspect, B-carotene, C,Hw precursor to vitamin A, was first isolated from carrots. Dilute solutions of B-carotene are yellow, hence its use as a food coloring. In plants, it is almost always present in combination with chlorophyll to assist in the harvesting of the energy of sunlight and to protect the plant against reactive species produced in photo- synthesis. As tree leaves die in the fall, the green of their chlorophyll molecules is replaced by the yellows and reds of carotene and carotene-related molecules. Compare the carbon skeletons of B-carotene and lycopene. What are the similarities? What are the differences? H3C. H3C CH3 CH3 CH3 H,C CH3 CH3 CH3 B-Carotene
As you might suspect, B-carotene, C,Hw precursor to vitamin A, was first isolated from carrots. Dilute solutions of B-carotene are yellow, hence its use as a food coloring. In plants, it is almost always present in combination with chlorophyll to assist in the harvesting of the energy of sunlight and to protect the plant against reactive species produced in photo- synthesis. As tree leaves die in the fall, the green of their chlorophyll molecules is replaced by the yellows and reds of carotene and carotene-related molecules. Compare the carbon skeletons of B-carotene and lycopene. What are the similarities? What are the differences? H3C. H3C CH3 CH3 CH3 H,C CH3 CH3 CH3 B-Carotene
Chapter20: The Protists
Section: Chapter Questions
Problem 4CT: Melvin Calvin and Andrew Benson determined the steps in the light-independent reactions of...
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Transcribed Image Text:As you might suspect, B-carotene, C,Hw precursor to vitamin A, was first isolated from
carrots. Dilute solutions of B-carotene are yellow, hence its use as a food coloring. In plants,
it is almost always present in combination with chlorophyll to assist in the harvesting of
the energy of sunlight and to protect the plant against reactive species produced in photo-
synthesis. As tree leaves die in the fall, the green of their chlorophyll molecules is replaced
by the yellows and reds of carotene and carotene-related molecules. Compare the carbon
skeletons of B-carotene and lycopene. What are the similarities? What are the differences?
H3C.
H3C CH3
CH3
CH3
H,C CH3
CH3
CH3
B-Carotene
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