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.
There are several different types of thyroid nodules. The most common types include: 1  colloid nodules: these occur due to an overgrowth of tissues in the thyroid gland. 2  thyroid cysts: these nodules are fluid-filled. 3  multinodular goiter: this nodule causes the thyroid to have an enlarged appearance.