Basic amino acid contains which of the following in its side chain?Group of answer choicesaldehydealkanecarboxylic acidamine

To determine which of the following options is present in the side chain of a basic amino acid, let's analyze the options provided:

1. Aldehyde: This functional group contains a carbonyl group (C=O) bonded to a hydrogen atom. It is not typically found in basic amino acids.

2. Alkane: This is a saturated hydrocarbon with single bonds only, containing only carbon and hydrogen. While alkanes are simple organic molecules, they do not characterize the side chain of basic amino acids.

3. Carboxylic acid: This functional group contains a carbonyl and a hydroxyl group (-COOH). Basic amino acids do possess a carboxylic acid group in their backbone but not in their side chain.

4. Amine: This functional group contains nitrogen atoms and is a defining feature of amino acids. Basic amino acids have an amine group in their side chains, which contributes to their basicity.

Conclusion

The correct answer is amine, as basic amino acids, such as lysine and arginine, contain an amine group in their side chains.