Attempt titrating an amino acid against a weak base and discover the number of dissociating (ionizable) functional groups in the amino acid.

Explanation

### Step-by-Step Solution

1. **Understanding Titration**: Titration is a laboratory technique used to determine the concentration of a solution by reacting it with a solution of known concentration. In this case, we are titrating an amino acid solution against a weak base.

2. **Identifying the Amino Acid**: Amino acids can be classified into three categories based on their side chains: neutral (non-polar), basic (positively charged), and acidic (negatively charged). The type of amino acid will influence the number of ionizable functional groups.

3. **Functional Groups in Amino Acids**: Amino acids typically contain at least two functional groups that can dissociate: the amino group (-NH2) and the carboxyl group (-COOH). Additionally, acidic amino acids may have extra carboxyl groups in their side chains, while basic amino acids may have extra amino groups.

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