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Answer for the clue "An important constituent of membranes ", 12 letters:
phospholipid

Alternative clues for the word phospholipid

Word definitions for phospholipid in dictionaries

Wikipedia Word definitions in Wikipedia
Phospholipids are a class of lipids that are a major component of all cell membranes . They can form lipid bilayers because of their amphiphilic characteristic. The structure of the phospholipid molecule generally consists of two hydrophobic fatty acid ...

Wiktionary Word definitions in Wiktionary
n. (context chemistry English) any lipid, such as lecithin or cephalin, consisting of a diglyceride combined with a phosphate group and a simple organic molecule such as choline or ethanolamine; they are important constituents of biological membranes

WordNet Word definitions in WordNet
n. any of various compounds composed of fatty acids and phosphoric acid and a nitrogenous base; an important constituent of membranes

Usage examples of phospholipid.

At seventy degrees and below, the phospholipids in the glia in the brain freeze.

Among the regular domes of the rank and file of phospholipid molecules, he caught occasional glimpses of an irregular mass, which he guessed to be a protein molecule that ran through the thickness of the cell membrane.

Now he remembered what Peerssa had told him about phospholipids in the glia around brain nerves.

Morrison, with some effort, allowed for his own miniaturization and grasped the fact that the bulges were the ends of molecules (of phospholipids, he assumed) that made up the cell membrane.