Which one of the graphs show the effect of temperature on the velocity of a typical enzymatic reaction?

Options

A.
B.
C.
D.

Answer

To determine which graph shows the effect of temperature on the velocity of a typical enzymatic reaction, we can follow these steps:

### Step 1: Understand the Relationship
Enzymatic reactions are influenced by temperature. As temperature increases, the reaction velocity typically increases up to a certain point, known as the optimum temperature. Beyond this point, the velocity decreases due to enzyme denaturation.

### Step 2: Identify the Axes
In the graphs provided, the x-axis represents temperature, while the y-axis represents the velocity of the enzymatic reaction.

### Step 3: Recognize the Typical Graph Shape
The typical graph showing the effect of temperature on enzymatic activity is usually bell-shaped. It starts with a gradual increase in velocity as temperature rises, reaches a peak at the optimum temperature, and then declines as the temperature continues to rise due to enzyme denaturation.

### Step 4: Analyze the Options
Look at each of the provided graphs:
- **Option 1**: Check if it shows a gradual increase, a peak, and then a decline.
- **Option 2**: Look for a linear increase or a flat line, which would not represent the typical enzymatic reaction.
- **Option 3**: Similar to option 2, check for linearity or lack of a peak.
- **Option 4**: Again, check for the characteristic bell shape.

### Step 5: Select the Correct Graph
The graph that displays a bell-shaped curve, indicating an increase in reaction velocity with temperature up to an optimum point, followed by a decrease, is the correct representation of the effect of temperature on enzymatic activity.

### Conclusion
After analyzing the options, you would select the graph that shows this bell-shaped curve as the correct answer.

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