Essential Information. Ultrasound technicians, also called diagnostic medical sonographers or sonographers, operate equipment that utilizes sound waves to create images of the body's internal structures. Ultrasound is commonly used in obstetrics, but it can also diagnose other medical conditions.ssential Information. Ultrasound technicians, also called diagnostic medical sonographers or sonographers, operate equipment that utilizes sound waves to create images of the body's internal structures. Ultrasound is commonly used in obstetrics, but it can also diagnose other medical conditions.
Flippase. Flippases are a family of transmembrane lipid transporter enzymes located in the membrane responsible for aiding the movement of phospholipid molecules between the two leaflets that compose a cell's membrane.
A phospholipase is an enzyme that hydrolyzes phospholipids into fatty acids and other lipophilic substances. There are four major classes, termed A, B, C and D, distinguished by the type of reaction which they catalyze: 1  Phospholipase A. 2  Phospholipase A1 - cleaves the SN-1 acyl chain.3  Phospholipase A2 - cleaves the SN-2 acyl chain, releasing arachidonic acid.ypes C and D are considered phosphodiesterases. Phospholipase A2 acts on the intact lecithin molecule and hydrolyses the fatty acid esterified to the second carbon atom. The resulting products are lysolecithin and a fatty acid. Phospholipase A2 is an enzyme present in the venom of bees and viper snakes.