Bacteria that have organic molecules for energy and as a source of carbon are known as

Options

A. chemoheterotrophs
B. photoautotrophs
C. photoheterotrophs
D. chemoautotrophs

Answer

To solve the question regarding the type of bacteria that utilize organic molecules for energy and as a source of carbon, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Question**: The question asks for bacteria that derive both their energy and carbon from organic molecules.

2. **Analyze the Options**:
- **Chemoheterotrophs**: These organisms obtain their energy and carbon from organic compounds. They rely on other organisms for both energy and carbon.
- **Photoautotrophs**: These organisms synthesize their own food using light energy and carbon dioxide. They do not rely on organic molecules for carbon.
- **Photoheterotrophs**: These organisms use light for energy but cannot use carbon dioxide as their carbon source; they depend on organic compounds for carbon.
- **Chemoautotrophs**: These organisms synthesize their own food using inorganic substances and carbon dioxide, not organic molecules.

3. **Identify the Correct Answer**: From the analysis, **Chemoheterotrophs** are the correct answer because they obtain both energy and carbon from organic molecules.

4. **Conclusion**: Therefore, the bacteria that have organic molecules for energy and as a source of carbon are known as **Chemoheterotrophs**.

### Final Answer:
**Chemoheterotrophs**

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