Which of the following are natural polymers

Options

A. Proteins to amino acids
B. Cellulose
C. Teflon
D. Natural rubber

Explanation

To determine which of the given options are natural polymers, let's analyze each option step by step.

### Step 1: Understand the Definition of Natural Polymers
Natural polymers are substances that occur naturally in the environment and can be extracted from living organisms. They are typically made up of repeating units of smaller molecules (monomers) and include materials like proteins, cellulose, and natural rubber.

### Step 2: Analyze Each Option
1. **Proteins**:
- Proteins are polymers made up of amino acids, which are natural substances found in living organisms. Therefore, proteins are considered natural polymers.

2. **Cellulose**:
- Cellulose is a carbohydrate that forms the structural component of the cell wall in green plants. It is a natural polymer made up of glucose units. Hence, cellulose is also a natural polymer.

3. **Teflon**:
- Teflon is a synthetic polymer known for its non-stick properties and is derived from petroleum. It is not found in nature and is therefore classified as a synthetic polymer.

4. **Natural Rubber**:
- Natural rubber is derived from the latex of rubber trees and is a natural polymer made up of isoprene units. Thus, natural rubber is a natural polymer.

### Step 3: Conclusion
Based on the analysis:
- **Natural Polymers**: Proteins, Cellulose, Natural Rubber
- **Synthetic Polymer**: Teflon

### Final Answer
The natural polymers from the given options are **Proteins, Cellulose, and Natural Rubber**.

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