NEED HELP PLEASE 1. Show the skeletal structure of a phosphatidyl serine that contains 16:0 and 18:2 (omega-6) fatty acid (acyl) reisidues in the glycerol C1 and C2, respectively. Be mindful of the stereochemistry. 2. Show the skeletal structure of a sphyngomyelin that contains a phosphine and a 20:4 45,8,11,14 FA residue. Be mindful of the stereochemistry. 3. At 20-25C, most animal fats are solid while most vegetable oils are liquid. Explain this phenomenon. Use illustrations to support your