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.
Lung nodules may be caused by: 1  A lung cancer. 2  A cancer that has spread (metastasized) to the lung from another part of the body. 3  A growth that is not cancer.  An infection, or a scar from an old 1  infection. Conditions that cause inflammation, like sarcoidosis.  Abnormal blood vessels that clump together, like an arteriovenous malformation.