Question

reagents, such as dinitrophenol, increase the permeability of the mitochondrial inner membrane to protons. the addition of dinitrophenol to a suspension of animal cells should stimulate atp synthesis by mitochondria. inhibit mitochondrial atp synthesis. increase lactic acid production. decrease the rate of oxidation of nadh. decrease the rate of pyruvate oxidation.

Explanation:

Dinitrophenol is an uncoupler. It increases the permeability of the mitochondrial inner - membrane to protons, which disrupts the proton - motive force across the inner membrane. This uncoupling inhibits mitochondrial ATP synthesis as the proton - gradient used for ATP synthesis is dissipated.

Answer:

inhibit mitochondrial ATP synthesis.