Answer:
If high amounts of sulfanilamide are in the presence of an enzyme whose substrate is PABA, the expected outcome is that the enzyme will stop functioning.
Explanation:
Sulfanilamide is the sulphur compound which is organic and has the structural similarity with PABA. PABA is the short form for p-aminobenzoic acid. It is necessary for different enzymatic reaction.
So for the enzyme whose substrate is p-aminobenzoic acid and has high amount of sulfanilamide then that enzyme fails to function properly.