In presence of TPP and decarboxylase, pyruvic acid is transformed into

Options

A. Acetaldehyde and `CO_(2)`
B. Ethyl alcohol and `CO_(2)`
C. Citric acid and `CO_(2)`
D. None of these

Answer

To solve the question regarding the transformation of pyruvic acid in the presence of TPP (thiamine pyrophosphate) and decarboxylase, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Components**:
- Pyruvic acid is a key intermediate in several metabolic pathways.
- TPP (thiamine pyrophosphate) is a coenzyme that plays a crucial role in decarboxylation reactions.
- Decarboxylase is an enzyme that catalyzes the removal of a carboxyl group from a molecule.

2. **Identify the Reaction**:
- In the presence of TPP and decarboxylase, pyruvic acid undergoes a decarboxylation reaction. This means that a carboxyl group (COOH) is removed from pyruvic acid.

3. **Determine the Products**:
- The decarboxylation of pyruvic acid typically results in the formation of acetaldehyde and the release of carbon dioxide (CO2).
- The reaction can be summarized as:
\[ \text{Pyruvic Acid} \xrightarrow{\text{TPP, Decarboxylase}} \text{Acetaldehyde} + \text{CO}_2 \]

4. **Evaluate the Options**:
- Option 1: Acetaldehyde and Carbon Dioxide - This is the correct transformation.
- Option 2: Ethyl alcohol - This is incorrect as it does not directly result from the reaction.
- Option 3: Citric acid and Carbon Dioxide - This is also incorrect as citric acid is not a product of this reaction.
- Option 4: None of these - This is incorrect since we have a valid option.

5. **Conclusion**:
- The correct answer to the question is **Option 1: Acetaldehyde and Carbon Dioxide**.