Question

DRAW IT The graph here shows the pH difference across the inner mitochondrial membrane over time in an actively respiring cell. At the time indicated by the vertical arrow, a metabolic poison is added that specifically and completely inhibits all function of mitochondrial ATP synthase. Draw what you would expect to see for the rest of the graphed line, and explain your reasoning for drawing the line as you did.

Answer 1

When an ATP synthase was inhibited by metabolic poision, it causes increase of H+ concentration in the mitochondrial membrane causes lowering of pH. Hence, the graphed line gradually decreases i.e pH gradually decreases with time

PH difference across membrane 2