The pH gradient established by the electron transport chain: a. Exists between the matrix and...

Question:

The pH gradient established by the electron transport chain:

a. Exists between the matrix and the mitochondrial intermembrane space.

b. Sets up a voltage gradient that drives GTP formation.

c. Is established by electron transfer from FADH2 and NADPH from the TCA cycle to oxygen.

d. Occurs because Fe-S clusters can only transport protons and not electrons.

e. All of the above.

The Electron Transport Chain:

The electron transport chain consists of a series of molecular complexes embedded in the inner mitochondrial membrane. They shuttle electrons from the reducing molecules {eq}NADH {/eq} and {eq}FADH_2 {/eq} to molecular oxygen reducing it to water.

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The correct answer is (a). The pH gradient established by the electron transport chain exists between the matrix and the mitochondrial inter-membrane...

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The Electron Transport Chain: Products and Steps

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Chapter 8 / Lesson 5
129K

What is an electron transport chain (ETC)? Learn where the ETC takes place. See electron transport chain steps along with its reactants and products.


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