Question

In the electron transport chain, protons are pumped from where to where in the mitochondria of eukaryotic cells?

from the intermembrane space to the cytosol

from the intermembrane space to the matrix

from the mitochondrial matrix to the intermembrane space

from the outside of the cell to the cytosol

from the outside of the cell to the matrix

Answer 1

option C is correct.

the electron transport change pumps protons across the inner mitochondrial membrane from the inner matrix to the intermembrane space, producing a strong hydrogen concentration gradient. the exergonic flow of electrons from NADH and FADH2 to pump H+ across the membrane, from the mitochondrial matrix into the intermembrane space. In eukaryotic cells, the electron carriers are spatially arranged in the inner mitochondrial membrane in such a way that H+ is accepted from the mitochondrial matrix and deposited in the intermembrane space.