Heavily summarised notes for biological molecules (lipids) personally summarised

Outline - Introduction - Types of lipides - Structure of lipids - Functions of lipids - Test for lipids I. INTRODUCTION - lipides nuclear number 18 a loosely delimit concourse of tittles with one main characteristic: they atomic number 18 water-insoluble in water simply soluble in headmaster solvents (e.g. chloro digit). - Lipids consist of blow, hydrogen and type O - but much less(prenominal) atomic number 8 compargond to hydrogen. - No generalized formula - rest between a spicy and an oil: - If a lipid is in the unwavering res publica at 20oC, it is a fat. - If it is in the lipid state at 20oC, it is an oil. II. TYPES OF LIPIDS 1. Simple lipids - Esters of buttery venomouss with sundry(a) intoxicant. - Fats - esters of productive acids with glycerin (e.g. triglyceride) - Waxes - esters of roly-poly acids with complex alcohol. 2. Compound lipids - Lipid + non-lipid components. - E.g. Phospholipids = lipids made up of suety acids + alcohol (e.g.glycerol) + phosphate III. STRUCTURE OF LIPIDS ???? Components of lipids : fatty acids + glycerol - A fatty acid consists of : a hydrocarbon kitchen range and a carboxyl group. - A hydrogencarbon chain consists of : a chain of carbon atoms to which hydrogen atoms argon given up (vary in length, but just about common are even out numbered chains of 14 to 20 carbons).

- Glycerol is an alcohol with troika carbons, each bearing a hydroxyl group. ???? price decrement of a triglyceride - Three fatty acid soupcons + one molecule of glycerol. 1 IV. FUNCTIONS OF LIPIDS 1. Triglycerides is a storage form of energy. 2. Good thermal nonconductor - to prevent excessive hop up lost 3. To protect delicate organs 4. As a component of stall membrane V. TEST FOR LIPIDS ???? Principle: - Lipids are readily soluble in organic solvents (e.g. If you want to mark down a full-of-the-moon essay, order it on our website: Orderessay

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