Which is not trait of enzymes ?

Options

A. Proteinaceous nature
B. Specific in nature
C. Speed up rate of biochemical reaction
D. Used up in reaction.

Answer

To determine which option is not a trait of enzymes, we will analyze each of the provided options step by step.

### Step 1: Analyze the first option - "It is proteinaceous in nature."
- Enzymes are indeed proteins. They are made up of amino acids and have a specific three-dimensional structure that is crucial for their function.
- **Conclusion**: This statement is true and is a trait of enzymes.

**Hint**: Remember that enzymes are biological catalysts primarily composed of proteins.

### Step 2: Analyze the second option - "Specific in nature."
- Enzymes have specific active sites that allow them to bind only to specific substrates. This specificity is a key characteristic of enzymes.
- **Conclusion**: This statement is also true and is a trait of enzymes.

**Hint**: Think about how enzymes interact with substrates; specificity is essential for their function.

### Step 3: Analyze the third option - "Speed up the rate of biochemical reaction."
- Enzymes catalyze biochemical reactions by lowering the activation energy required for the reaction to occur, thereby increasing the reaction rate.
- **Conclusion**: This statement is true and is a trait of enzymes.

**Hint**: Consider how enzymes facilitate reactions without changing the overall process.

### Step 4: Analyze the fourth option - "Used up in the reaction."
- Enzymes are not consumed in the reactions they catalyze. They can be reused multiple times after facilitating a reaction.
- **Conclusion**: This statement is false and is not a trait of enzymes.

**Final Answer**: The option that is not a trait of enzymes is "used up in the reaction."

### Summary
- The correct answer is that enzymes are **not used up in the reaction**. They catalyze reactions without being consumed.