1 Aden, Yemen is at 12 49'N, 45 1'E, 3 m (10 ft). 2  See map. 3  Aden has a subtropical desert / low-latitude arid hot climate (K ppen-Geiger classification: BWh). 4  The annual average temperature is 29.2 degrees Celsius (84.5 degrees Fahrenheit).
The core of a sphingolipid is an amino alcohol called sphingosine. Complex sphingolipids located in the plasma membrane of animal cells (especially nerve cells) have a structural function and are believed to protect the cell surface from harmful environmental factors.
What are several roles of phospholipids? -integral part of cell membrane (can serve as anchors to cell membranes) -serve as a reservoir for intracellular messengers. -non membrane bound phospholipids can serve as: lung surfactant and platelet activating factor (PAF)