Phospholipids a. are really a wax b. are very polar on both ends c. contain a sugar, which may be simple or a chain d. are part of the structure of cell membranes

The answer is D. Phospholipids are diglycerides (two fatty acid chains covalently bonded to a glycerol molecule) that are covalently bonded to a phosphate group by an ester linkage. Fatty acids are long chains that are mostly made up of hydrogen and carbon, while phosphate groups consist of a phosphorus molecule with four oxygen molecules attached. Glycerol is a 3 carbon chain containing hydroxyl groups in each of the carbon.

the function of the protein macromolecule is to move things in and out of the cell and transport other molecules in the body. there are many functions of proteins. they are the basic building blocks of living things and are responsible for the growth and repair of body cells and tissues.

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