Step 1: Understanding the Concept:
Vitamins are organic compounds required in small amounts in the diet for specific biological functions. Some vitamins are known by their chemical names, which may include the term "acid".
Step 3: Detailed Explanation:
- Aspartic acid and Glutamic acid are non-essential amino acids.
- Valine is an essential amino acid.
- Saccharic acid is a dicarboxylic acid derived from the oxidation of glucose.
- Ascorbic acid is the chemical name for Vitamin C. It is a water-soluble vitamin essential for the synthesis of collagen and immune function.
Step 4: Final Answer:
Ascorbic acid is a vitamin.