The lipids are a large and diverse group of naturally occurring organic compounds that are related by their solubility in nonpolar organic solvents (e.g. ether, chloroform, acetone & benzene) and general insolubility in water.hospholipids are the main constituents of cell membranes. They resemble the triglycerides in being ester or amide derivatives of glycerol or sphingosine with fatty acids and phosphoric acid.
What causes lung nodules? Quick Answer. According to the Seattle Cancer Care Alliance, lung, or pulmonary, nodules have numerous causes, including fungal or bacterial infection, sarcoidosis, lymphoma, lung cancer and cancers metastasized from other organs.
Thyroid cancer is found in about 8 percent of nodules in men (or 8 out of 100) and in 4 percent of nodules in women. About 90 percent of all thyroid nodules are benign (non-cancerous). The cause of most benign nodules is not known, but they are often found in members of the same family. Worldwide, lack of iodine in the diet is a very common cause of nodules.