Biology

Biology, 23.06.2019 01:30, vanydparis

Electrons are brought to the electron transport system by the oxidation of

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Biology, 08.07.2019 11:00, katiemh8302

Match each component of the electron transport chain with its description. drag the terms on the left to the appropriate blanks on the right to complete the sentences. fe-s complex iii q (ubiquinone) nadh o2 (molecular oxygen) is a multi-protein complex within the electron transport chain. is a nonprotein organic electron carrier within the electron transport chain. donates electrons to the electron transport chain. is a prosthetic group present in several components of the electron transport chain. is the final electron acceptor of the electron transport chain.

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Biology, 25.08.2019 17:50, derisepicowe0fa

The combustion of glucose ultimately involves the transfer of electrons to oxygen (o2). in biological systems, this takes place without a large increase in temperature. which of the following statements about this process in biological systems is true? 1) coupled oxidation-reduction reactions occur with electrons being passed to intermediate electron carriers. 2) the process involves the transfer of 12 pairs of electrons to oxygen. 3) the transfer of electrons from intermediate electron carriers to molecular oxygen is catalyzed by the electron transport chain. 4) though the process is a controlled oxidation, some energy is lost.

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Biology, 26.09.2019 20:30, sierraroeser

Mark as put the steps of the light reactions in the correct order. 1. atp uses energy to add a phosphate to adp forming atp 2. water is split to replace the electrons in photosystem ii 3. light energy is transferred to a chlorophyll reaction center where electrons become energized. 4. electrons from photosystem i become energized and escape photosystem i and move down the second electron transport chain. 5. at the end of the electron transport chain, the energized electrons and an h+ ion are used to reduce nadp+ to nadph 6. electrons move to an electron acceptor in the electron transport chain and electrons in photosystem ii are replaced by the splitting of a water molecule 7. electrons move down the electron transport chain, releasing energy 8. a protein in the electron transport chain, pumps h+ ions from the stroma into the thylakoid space 9. electrons from the electron transport chain close to photosystem ii replace the elctrons lost in photosystem i 10. photosystem ii receives photons in the form of light energy 11. h+ ions flow down the concentration gradient through a channel in atp synthase, releasing energy in the process

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Biology, 27.09.2019 02:00, uwrongboi

Mark as ! put the steps of the light reactions in the correct order - light energy is transferred to a chlorophyll reaction center where electrons become energized. - a protein in the electron transport chain, pumps h+ ions from the stroma into the thylakoid space - electrons from the electron transport chain close to photosystem ii replace the elctrons lost in photosystem i - electrons from photosystem i become energized and escape photosystem i and move down the second electron transport chain. - h+ ions flow down the concentration gradient through a channel in atp synthase, releasing energy in the process - electrons move down the electron transport chain, releasing energy - electrons move to an electron acceptor in the electron transport chain and electrons in photosystem ii are replaced by the splitting of a water molecule - photosystem ii receives photons in the form of light energy - water is split to replace the electrons in photosystem ii - at the end of the electron transport chain, the energized electrons and an h+ ion are used to reduce nadp+ to nadph - atp uses energy to add a phosphate to adp forming atp

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