A light-capturing unit in a chloroplast’s thylakoid membrane has two molecules of P700 chlorophyll a at its reaction center. (It is called P700 because it most effectively absorbs light of wavelength 700 nm).Group of answer choicesrubiscophotosystemprimary electron acceptorPEP carboxylasereaction-center complex
Question
A light-capturing unit in a chloroplast’s thylakoid membrane has two molecules of P700 chlorophyll a at its reaction center. (It is called P700 because it most effectively absorbs light of wavelength 700 nm).Group of answer choicesrubiscophotosystemprimary electron acceptorPEP carboxylasereaction-center complex
Solution
The light-capturing unit in a chloroplast’s thylakoid membrane that has two molecules of P700 chlorophyll a at its reaction center is known as a photosystem. Specifically, this is referred to as Photosystem I. The P700 chlorophyll a molecules are part of the reaction-center complex of Photosystem I. When these molecules absorb light most effectively at a wavelength of 700 nm, they get excited and lose an electron, which is then captured by the primary electron acceptor.
Similar Questions
A light-capturing unit in a chloroplast’s thylakoid membrane that has two molecules of P680 chlorophyll a at its reaction center. (It is called P680 because this pigment is best at absorbing light having a wavelength of 680 nm).Group of answer choicesprimary electron acceptorreaction-center complexPEP carboxylasephotosystemrubisco
In the thylakoid membrane of a chloroplast, a specialized molecule that shares the reaction-center complex with a pair of chlorophyll a molecules and that accepts an electron from them.Group of answer choicesreaction-center complexPEP carboxylaseNADP⁺primary electron acceptorlight-harvesting complexphotosystemrubiscoG3P
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