How many - COOH groups are present in Aspartic acid

Options

A. 0
B. 1
C. 2
D. 3

Answer

To determine how many -COOH groups are present in aspartic acid, we can follow these steps:

### Step 1: Understand the Structure of Aspartic Acid
Aspartic acid is an amino acid with a specific molecular structure. It contains both an amino group (-NH2) and carboxylic acid groups (-COOH).

### Step 2: Draw the Structure
The structure of aspartic acid can be represented as follows:

```
COOH
|
H2N-CH-COOH
|
H
```

### Step 3: Identify the -COOH Groups
From the structure, we can see that there are two -COOH groups:

1. One -COOH group is attached to the carbon adjacent to the amino group.
2. The second -COOH group is attached to the terminal carbon.

### Step 4: Count the -COOH Groups
Now, we count the number of -COOH groups present in the structure:

- First -COOH group: 1
- Second -COOH group: 1

Total = 1 + 1 = 2

### Conclusion
Aspartic acid contains **2 -COOH groups**.

### Final Answer
There are 2 carboxylic acid groups present in aspartic acid.

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