Amino acids are mostly synthesised from
Correct answer: D. aketoglutaric acid
- A. mineral salts
- B. fatty acids
- C. volatile acids
- D. aketoglutaric acid
Explanation
The correct answer is aketoglutaric acid. A-ketoglutaric acid plays a crucial role in the Krebs cycle, where it serves as an intermediate. It is a precursor for amino acids, such as glutamic acid, which is essential for protein synthesis. The other options do not act as direct precursors in the synthesis of amino acids. Mineral salts, fatty acids, and volatile acids have different roles in metabolism and do not directly contribute to amino acid synthesis.
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The chapter covers water's polarity and biological roles, carbohydrates, lipids, proteins and nucleic acids, including their monomers, bonds, structures and functions. It also distinguishes RNA from DNA and explains conjugated molecules such as glycoproteins, glycolipids and nucleoproteins, which combine organic molecules with a non-protein component.
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