The role of carotenoids is to Group of answer choices collect light quench singlet oxygen quench the triplet state of Bchl
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Carotenoids are a class of pigments found in plants, algae, and some bacteria. Their primary role is to absorb light energy in the photosynthetic process, which is then transferred to chlorophyll for the production of chemical energy in the form of ATP. Show more…
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Refer to the Biochemistry in Focus section of your text for this chapter to answer this question. In addition to nonphotochemical quenching, what role do accessory pigments have in plants? Accessory pigments improve the light-harvesting efficiency of the chloroplasts by capturing and funneling light energy to the reaction centers in photosystems I and II. Accessory pigments donate electrons to P700+ in photosystem I to regenerate P700. Accessory pigments donate electrons to P680+ in photosystem II to regenerate P680. The accessory pigments generate a proton gradient across the thylakoid membrane.
Madhur L.
Question 69 (1.5 points) In the thylakoid membranes of plants, what is the main role of the antenna pigment molecules? a) harvest photons and transfer light energy to the reaction-center chlorophyll b) concentrate photons within the stroma c) transfer electrons to ferredoxin and then NADPH d) synthesize ATP from ADP and Pi e) split water and release oxygen to the reaction-center chlorophyll
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THE ROLE OF PIGMENTS Why are carotenoids considered accessory pigments/ why is that a bad term for them? a) Light absorbed by carotenoids is not used for photosynthesis/ carotenoids are necessary to plants to prevent leaves from oxidative damage to the chlorophyll molecules. b) Light absorbed by carotenoids is not used for photosynthesis/ carotenoids are necessary to plants to prevent leaves from overheating. c) Light absorbed by carotenoids is not directly used for photosynthesis/ carotenoids are necessary to plants to prevent leaves from overheating. d) Light absorbed by carotenoids is not directly used by photosynthesis/ carotenoids are necessary to plants to prevent leaves from oxidative damage to the chlorophyll molecules.
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