Question

question 15 of 20
the electron transport chain consists of protein complexes embedded in the inner mitochondrial membrane, where proton gradient by a series of oxidation - reduction, or redox, reactions. although all of the stages of cellular respiration (glycolysis, the citric acid cycle, and the electron transport chain) are necessary for life, the electron transport chain sometimes called the most important stage.
first complete the sentence, then answer the question.
the electron transport chain uses the transfer of
what is the function of the proton gradient in the
it is potential energy that can oxidize o₂, for
it is kinetic energy that interconverts nad⁺ and nadh.
it is chemical energy that directly drives the synthesis of proteins.
it is potential energy that the cell uses to generate atp.

Explanation:

The electron - transport chain uses electron transfer between protein complexes to set up a proton gradient. The proton gradient is potential energy used by the cell to generate ATP through chemiosmosis.

Answer:

The electron transport chain uses the transfer of electrons between protein complexes to set up a proton gradient.
It is potential energy that the cell uses to generate ATP.