Question

Which of the following behaves as a precursor for the synthesis of TGL and PL?

• A. Glycerol-3-phosphate
• B. Pyruvic acid
• C. Acetyl coA
• D. 2-Phospho glycerate

Hint:

Glycerol-3-phosphate is a key molecule in lipid biosynthesis, serving as a backbone for triglycerides and phospholipids.

Answer 1

The Correct Option is A

Glycerol-3-phosphate is the precursor for the synthesis of triglycerides (TGL) and phospholipids (PL). It is converted into diacylglycerol and then into triglycerides or incorporated into phospholipids. Pyruvic acid and acetyl-CoA are involved in energy metabolism but are not directly used for synthesizing these lipid molecules.
Final Answer: \[ \boxed{\text{Glycerol-3-phosphate}} \]