Which one of the following is amino acids

Options

A. `CH_(3)CONH_(2)`
B. `CH_(3)CONHCH_(3)`
C. `CH_(3)NHCO`
D. `NH_(2)CH_(2).COOH`

Explanation

To determine which of the given options is an amino acid, we need to understand the structure and characteristics of amino acids. Here’s a step-by-step solution:

### Step 1: Understand the Structure of Amino Acids
Amino acids are organic compounds that contain both an amine group (-NH2) and a carboxylic acid group (-COOH). The general structure of an amino acid can be represented as:
- **General Formula**: R-CH(NH2)-COOH
Where R represents a side chain that is specific to each amino acid.

### Step 2: Identify the Components
In the structure of an amino acid:
- The **amine group** is responsible for the basic properties of amino acids.
- The **carboxylic group** gives them acidic properties.
- The central carbon atom (C) is attached to the amine group, the carboxylic group, a hydrogen atom, and a variable side chain (R).

### Step 3: Analyze the Given Options
If the question provides a list of compounds, we need to check each one to see if it contains both an amine group and a carboxylic group.

### Step 4: Example of an Amino Acid
For example, Glycine is the simplest amino acid, which has the structure:
- **Glycine**: NH2-CH2-COOH
It contains both the amine group (NH2) and the carboxylic group (COOH), confirming it is an amino acid.

### Step 5: Conclusion
After analyzing the options provided, the correct answer would be the compound that contains both an amine group and a carboxylic group. If Glycine is one of the options, then it is the amino acid.