All the following are correct about enzymes, except:

Options

A. Lower the energy of activation of reaction
B. Make the equilibrium more favourable for the organism
C. Lower the energy of product and increases the energy of reactant .
D. Are altered permanently in the reaction they catalyse

Answer

To solve the question regarding enzymes, we need to evaluate each statement provided in the options and identify which one is incorrect. Here's a step-by-step breakdown:

### Step 1: Understand the Role of Enzymes
Enzymes are biological catalysts that speed up chemical reactions by lowering the activation energy required for the reaction to occur.

### Step 2: Analyze Each Statement
1. **Lower the energy of activation of reaction**: This statement is correct. Enzymes indeed lower the activation energy, allowing reactions to proceed more quickly.

2. **Make the equilibrium more favorable for the organism**: This statement is also correct. Enzymes help in reaching equilibrium faster but do not change the position of equilibrium.

3. **Lower the energy of the product and increases the energy of reactant**: This statement is incorrect. Enzymes do not lower the energy of the product; they lower the activation energy of the reactants to facilitate the reaction. The energy levels of reactants and products are not altered by enzymes.

4. **Altered permanently in the reaction they catalyze**: This statement is incorrect. Enzymes are not permanently altered after catalyzing a reaction; they can be reused multiple times.

### Step 3: Identify the Incorrect Statement
From the analysis:
- The first statement is correct.
- The second statement is correct.
- The third statement is incorrect (it misrepresents the role of enzymes).
- The fourth statement is incorrect (it misrepresents the permanence of enzyme alteration).

Since we are looking for the incorrect statement about enzymes, the answer is the third statement.

### Final Answer
The incorrect statement about enzymes is: **"Lower the energy of the product and increases the energy of reactant."**

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