Question

multiple - choice question
what determines the optimal ph of an enzyme?
how much enzyme there is
where the enzyme normally works
what the substrate is

Explanation:

• The amount of enzyme (first option) affects reaction rate but not optimal pH.
• The optimal pH of an enzyme is determined by its natural working environment (e.g., stomach enzymes work at acidic pH, intestinal at neutral/basic).
• The substrate (third option) interacts with the enzyme but doesn’t determine optimal pH. So the correct factor is where the enzyme normally works.

Answer:

B. where the enzyme normally works