The intermediate common to fatty acid and carbohydrate oxidation is

Options

A. Pyruvate
B. Acetyl CoA
C. Oxaloacetate
D. Succinate

Answer

To solve the question regarding the intermediate common to fatty acid and carbohydrate oxidation, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Question**: We need to identify the common intermediate in the metabolic pathways of fatty acid oxidation and carbohydrate oxidation.

2. **Identify the Processes**:
- Fatty acid oxidation primarily involves the breakdown of fatty acids into acetyl-CoA through a process called beta-oxidation.
- Carbohydrate oxidation, particularly glucose metabolism, involves glycolysis, which converts glucose into pyruvate. Pyruvate can then be converted into acetyl-CoA via oxidative decarboxylation.

3. **Analyze the Options**: The options given are:
- Pyruvate
- Acetyl-CoA
- Oxaloacetate
- Succinate

4. **Evaluate Each Option**:
- **Pyruvate**: This is an intermediate in carbohydrate metabolism but not in fatty acid oxidation.
- **Acetyl-CoA**: This is produced from both fatty acid oxidation (beta-oxidation) and carbohydrate oxidation (conversion of pyruvate).
- **Oxaloacetate**: This is involved in the citric acid cycle but is not a direct product of fatty acid oxidation.
- **Succinate**: This is also part of the citric acid cycle and not directly related to the oxidation of fatty acids or carbohydrates.

5. **Conclusion**: The common intermediate that links both fatty acid and carbohydrate oxidation is **Acetyl-CoA**.

### Final Answer:
The intermediate common to fatty acid and carbohydrate oxidation is **Acetyl-CoA**.

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