The organelle which synthesises lipids in the cell is
Smooth endoplasmic reticulum
Lipids are synthesised by the Smooth Endoplasmic Reticulum (SER). Proteins are synthesised by the ribosomes associated with the Rough Endoplasmic Reticulum (RER). Golgi body is involved in the packaging of proteins coming from the RER. Lysosomes contain hydrolysing enzymes that help in degrading the faulty cell components and invading pathogens.