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  Overgrowth of normal thyroid tissue. 3  Thyroid cyst.  Chronic inflammation of the thyroid 1  (thyroiditis). Multinodular goiter.  Thyroid cancer.