Answer:
Enzymes for glycolysis.
Explanation:
Electron transport system may be defined as a cyclic transport of protons that result in the generation of ATP. The electron transport chain occur in the inner mitochondrial membrane.
The mitochondria requires protons pumps, some enzymes of the kreb's cycle and ATP synthase. The enzymes necessary for glycolysis are not required in the production of ATP from the mitochondria. Different complexes are important for the electron transport chain.
Thus, the correct answer is option (C).