An enzyme which increases the rate of permeability across the membrane is

Options

A. permease
B. catalase
C. gelatinase
D. amylase

Answer

To solve the question regarding which enzyme increases the rate of permeability across the membrane, we need to analyze the options provided and understand the function of each enzyme mentioned.

### Step-by-Step Solution:

1. **Understand the Concept of Permeability**:
- Permeability refers to the ability of substances to pass through a membrane. An enzyme that increases permeability would facilitate the movement of specific substances across the cell membrane.

2. **Evaluate the Options**:
- **Option 1: Amylase**: This enzyme is involved in the digestion of carbohydrates, specifically starch into sugars. It does not directly affect membrane permeability.
- **Option 2: Gelatinase**: This enzyme hydrolyzes gelatin, which is a protein. While it breaks down substances, it does not increase membrane permeability.
- **Option 3: Catalyst**: This is a general term for substances that speed up chemical reactions. In this context, it refers to the decomposition of hydrogen peroxide but does not relate to membrane permeability.
- **Option 4: Permease**: This enzyme acts as a transport protein that facilitates the movement of specific molecules across the cell membrane. It directly increases the permeability of the membrane to certain substances.

3. **Identify the Correct Answer**:
- Based on the analysis, the enzyme that increases the rate of permeability across the membrane is **Permease**.

### Final Answer:
The enzyme which increases the rate of permeability across the membrane is **Permease**.

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