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zavuch27 [327]
3 years ago
5

each pair of electrons is passed down the chain, dropping in _____ needed for active transport of H+ ions against their _____.

Biology
1 answer:
Travka [436]3 years ago
8 0

Answer:

Dropping in energy levels

Against their concentration gradient

Explanation:

The pair of electrons are passed down a series of electron carriers of progressively lower energy levels through a series of redox reactions in the electron transport chain, releasing energy (electrical potential energy) to be used by H+ pump for the active transport of H+ ions (aka protons) from a region of higher concentration to a region of lower energy level against its concentration gradient.

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A full valence shell is the most stable electron configuration. Group 18 elements or noble gases such as helium, neon, and argon, have a full outer, or valence, shell. Elements in other groups have partially-filled valence shells and gain or lose electrons to achieve a stable electron configuration.

They are extremely unreactive and do not form bonds with themselves. Solid helium is the the ultimate fine powder being monotomic.

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