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.
Several conditions can cause nodules to develop in your thyroid gland: 1  Iodine deficiency. 2  Lack of iodine in your diet can sometimes cause your thyroid gland to develop thyroid nodules. 3  But iodine deficiency is uncommon in the United States, where iodine is routinely added to table salt and other foods. Goiter is a term used to describe any enlargement of the thyroid gland, which can be caused by iodine deficiency or a thyroid disorder. 2  A multinodular goiter contains multiple distinct nodules within the goiter, but its cause is less clear. 3  Thyroid cancer.