Which Process Might Be Affected by the Mutation of a Transmembrane

Multiple Choice

Which process might be affected by the mutation of a transmembrane protein in the mitochondrial membrane?  

A) establishment of hydrogen ion gradient
B) reduction of coenzyme NADH
C) reduction of coenzyme FADH₂
D) glucose transport into the mitochondrion
E) transfer of acetyl CoA into the mitochondrion