Question

the graph below shows the temperature range of an enzyme. what is the optimal (best) temperature for this enzyme?
graph: y-axis = rate of reaction, x-axis = temperature (°c) with ticks 25, 30, 36, 40, 46, 50, 55, 60; a curve peaks at a temperature. a circular option (likely multiple choice) shows 30c (presumed 30°c).

Explanation:

Step1: Understand the graph's meaning

The graph has "Rate of Reaction" on the y - axis and "Temperature (°C)" on the x - axis. The optimal temperature for an enzyme is the temperature at which the rate of reaction is the highest (the peak of the curve).

Step2: Identify the peak's x - value

Looking at the x - axis labels (25, 30, 36, 40, 46, 50, 55, 60) and the shape of the curve (a parabola - like curve opening downwards), the peak of the curve (maximum rate of reaction) occurs at the temperature value corresponding to the highest point on the curve. From the x - axis, the peak is around 40°C (since the x - axis marks are 25, 30, 36, 40, etc., and the peak is at the 40 mark or near it).

Answer:

40°C (assuming the peak is at 40°C from the x - axis labels and the curve's shape. If there was a specific option like 40°C among the choices, that would be the answer. Since the original problem's options are partially shown, but from the graph's x - axis and curve, the optimal temperature is at the peak, which is around 40°C)