Sphingolipids differ from phosphoglycerides because? A. sphingolipids never have the phosphodiester linkage found in phosphoglycerides. B. sphingolipids utilize sphingosine to replace the glycerol backbone and one of the two fatty acyl tail found in phosphoglycerides. C. sphingolipids are the only lipids in lipids rafts. D. sphingolipids never contain sugar groups.

The model below shows a chemical reaction that takes place in cells. B Which statement correctly describes the details of the reaction shown above? A A polymer is built from monomers as water is removed. U HO-1 2 3 с HO- 1 2 3 H HO D H₂O A lipid polymer is built from monomers as water is removed. A polymer is hydrolyzed into its component monomers as water is added. Adhesion is occurring between water molecules. -H

The following are functions of lipids EXCEPT A. Isolate cellular components from its environment B. Serve as signal molecules and mediators of cellular processes C. Membrane fluidity determinant D. Alternative energy source of cells O E. Facilitate movement of metabolites in and out of cells

How is chitin different from cellulose and amylopectin? Compare how these three oligopeptides are similar and different in terms of composition, bonds, structure and cellular roles.

Glucose polymers: Which of the following is/are FALSE? a. Beta-glycosidic bonds are found in starch, glycogen and chitin b. Beta-glycosidic bonds are found in cellulose and chitin C. alpha-glycosidic bonds are found in starch and glycogen d. alpha-glycosidic bonds are found in chitin and cellulose O b,c.d O a, b, c, d а, d a,b, d