LIFESCI 2N03 Study Guide - Final Guide: Lipase, Arachidonic Acid, Blood Vessel

• School: McMaster University
• Department: Life Sciences
• Course: LIFESCI 2N03
• Professor: Danny M.Pincivero

Document Summary

Have ability of move through cell membrane before protein transporters because of the lipid bi-layer. Main classes of lipids are triglycerides, phospholipids, sterols. Animal fats are more harmful to cv except fish oil. Make up approximately 2% of all dietary lipids. Chylomicron is a lipoprotein vesicle used to transport cholesterol and triglycerides. Cholesterol - too much is related to cv problems. Eggs and animal based foods contain dietary cholesterol. Too much is detrimental, but vital for hormones. Precursor to sex hormones and cortisol, vitamin d, and bile acids. Skin cells use uv rays to convert cholesterol to vitamin d. Our cells synthesize cholesterol, they increase too much with food intake. Hydrocarbon chains from 4 to 24 carbon long. Notation - 18:2 (number of carbons : number of double bonds) Butyric acid - provides the flavour in butter. Omega-3 has 3 double bond sites, with omega end. Saturated - all carbons are in a single bond.