The pigment ?-carotene (below) is a tetraterpene consisting of 8isoprene units. ?-carotene has one unusual head-to-head bondbetween isoprene units in which C-4 carbons of two isoprene unitsare bonded to each other. Mark that bond in the structure. It willappear green when you highlight it.
The pigment Beta-carotene (below) is a tetra terpene consisting of 8 isoprene units. Beta-carotene has one unusual head-to-head bond between isoprene units in which C-4 carbons of two isoprene units are bonded to each other. Mark that bond in the structure. It will appear green when you highlight it. Incurrent. View the hint and keep in mind the bond you are looking for will be a double bond formed between C4 of two isoprene units. Your selection will consist of one double bond.
