Enzymes as they exist inside the cell are

Options

A. Solid
B. Crystals
C. Solution
D. Colloid.

Answer

To answer the question "Enzymes as they exist inside the cell are:", we need to analyze the options provided and understand the nature of enzymes within a cellular context. Here’s a step-by-step breakdown of the solution:

### Step 1: Understand the Role of Enzymes
Enzymes are biological catalysts that speed up chemical reactions in the body by lowering the activation energy required for those reactions. This means they are crucial for various metabolic processes.

**Hint:** Remember that enzymes are not just any molecules; they specifically act as catalysts in biochemical reactions.

### Step 2: Identify the Chemical Nature of Enzymes
Most enzymes are proteins. This means they are made up of amino acids and have a specific structure that allows them to function effectively in catalyzing reactions.

**Hint:** Consider the basic building blocks of enzymes and their primary structure.

### Step 3: Determine the State of Enzymes in Cells
Enzymes exist in a specific physical state within the cell. They are not found as solids or in crystalline form. Instead, they are present in a colloidal state.

**Hint:** Think about how substances can exist in different states and what "colloidal" means in a biological context.

### Step 4: Analyze the Options
- **Solid:** Enzymes do not exist as solids in cells, so this option is incorrect.
- **Crystal:** Enzymes are non-crystalline in nature, so this option is also incorrect.
- **Solution:** While enzymes may be dissolved in a solution, they do not exist solely in this form.
- **Colloid:** This is the correct option, as enzymes exist in a colloidal state, which is a homogeneous mixture that is non-crystalline.

**Hint:** Evaluate each option carefully based on the properties of enzymes.

### Step 5: Conclusion
Based on the analysis, the correct answer to the question is that enzymes as they exist inside the cell are in a colloidal state.

**Final Answer:** Colloid