Which one of the following intermediates of respiration, involve in fatty acids formation ?

Options

A. Pyruvic acid
B. Succinic acid
C. Acetyl Co-A
D. Citric acid

Answer

To solve the question "Which one of the following intermediates of respiration is involved in fatty acids formation?", we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Process of Respiration**:
- Respiration is a metabolic process that involves the breakdown of substrates to derive energy. This process includes catabolism, where larger molecules are broken down into smaller ones.

2. **Identify the Role of Carbohydrates and Fats**:
- Carbohydrates are broken down into glucose, which then enters the respiratory pathway.
- Fats are converted into fatty acids and glycerol during respiration.

3. **Conversion of Fatty Acids**:
- Fatty acids are further converted into acetyl-CoA. This conversion is crucial as acetyl-CoA is a key intermediate in various metabolic pathways.

4. **Link Between Acetyl-CoA and Fatty Acid Synthesis**:
- During the synthesis of fatty acids, acetyl-CoA is withdrawn from the respiratory pathway. This indicates that acetyl-CoA plays a significant role in the formation of fatty acids.

5. **Conclusion**:
- Based on the understanding that acetyl-CoA is derived from fatty acids and is essential for their synthesis, we conclude that the correct answer to the question is **acetyl-CoA**.

### Final Answer:
The intermediate of respiration involved in fatty acid formation is **acetyl-CoA**.

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