Photo AI
The graph shows the results of an investigation into the effects of two different inhibitors on enzyme activity - Scottish Highers Human Biology - Question 9 - 2019
Question 9
The graph shows the results of an investigation into the effects of two different inhibitors on enzyme activity. Which of the following conclusions can be drawn fro... show full transcript
Worked Solution & Example Answer:The graph shows the results of an investigation into the effects of two different inhibitors on enzyme activity - Scottish Highers Human Biology - Question 9 - 2019
Step 1
A. Inhibitor Z is a competitive inhibitor
Answer
This statement can be assessed based on the graph. In competitive inhibition, an increase in substrate concentration often overcomes the effect of the inhibitor. If enzyme activity approaches that of the control as substrate concentration increases, this would suggest that inhibitor Z behaves as a competitive inhibitor.
Step 2
B. There is a steady increase in enzyme activity with no inhibitor
Answer
The graph shows various levels of enzyme activity, indicating that without an inhibitor, enzyme activity should reach its maximum efficiency at higher substrate concentrations, consistent with typical enzyme kinetics.
Step 3
Step 4
D. Increasing substrate concentration increases the effect of both inhibitors
Answer
Increasing substrate concentration generally increases enzyme activity, but the effect of inhibitors may dampen this rise. The graph likely shows that while increasing substrate concentration does have an effect, the inhibitors cause a lower maximum activity compared to the control.