Unsaturated fatty acids are synthesized in the: (A) Plasma membrane, (B) Endoplasmic reticulum, (C) Cytosol, (D) Golgi complex
Answer is B. Most of the activity of these enzymes in the biosynthesis of triacylglycerols resides in the endoplasmic reticulum, but some are found in mitochondria.Ref: Harper&;s Biochemistry; 30th edition; Chapter 24; Metabolism of Acylglycerols & Sphingolipids