Non-essential Amino Acids: Synthesized by the Body
Non-essential amino acids are those that can be synthesized by the body and are not required to be obtained from the diet. These amino acids are necessary for the functioning and maintenance of the body, but the body has the ability to produce them on its own.

Synthesis of Non-essential Amino Acids
Non-essential amino acids are synthesized through various biochemical pathways in the body. These pathways involve the conversion of precursor molecules into the final amino acid product. The process of amino acid synthesis is regulated by specific enzymes that catalyze the necessary reactions.

Examples of Non-essential Amino Acids
There are 11 non-essential amino acids that are synthesized in the body. These include:

1. Alanine: Synthesized from pyruvate, which is a product of glucose metabolism.
2. Asparagine: Synthesized from aspartate, another non-essential amino acid.
3. Aspartate: Synthesized from oxaloacetate, a molecule involved in the citric acid cycle.
4. Glutamate: Synthesized from alpha-ketoglutarate, a molecule involved in the citric acid cycle.
5. Glutamine: Synthesized from glutamate and ammonia.
6. Glycine: Synthesized from serine, another non-essential amino acid.
7. Proline: Synthesized from glutamate.
8. Serine: Synthesized from 3-phosphoglycerate, a molecule involved in glycolysis.
9. Cysteine: Synthesized from methionine, a semi-essential amino acid.
10. Tyrosine: Synthesized from phenylalanine, an essential amino acid.
11. Arginine: Synthesized from citrulline, which is produced through another biochemical pathway.

These non-essential amino acids play important roles in various physiological processes such as protein synthesis, neurotransmitter production, and energy metabolism. While they can be synthesized by the body, their availability in the diet can still have an impact on overall health and well-being.

In conclusion, non-essential amino acids are synthesized by the body and are not required to be obtained from the diet. They play crucial roles in various physiological processes and their synthesis is regulated by specific enzymes.