LIPIDS

May 20, 2012

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LIPIDS. Characteristics of Lipids. Composed of Carbon, Hydrogen, and Oxygen Greater than 2:1 ratio of H:O Includes fats, oils, phospholipids, and cholesterol Building blocks are fatty acids and glycerol. Energy storage molecules Phospholipids part of cell membrane. Fatty Acid Structure.

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fatty acid structure
hydrocarbon chain
fatty acids
composed
carboxyl group

bly

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LIPIDS

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LIPIDS
Characteristics of Lipids • Composed of Carbon, Hydrogen, and Oxygen • Greater than 2:1 ratio of H:O • Includes fats, oils, phospholipids, and cholesterol • Building blocks are fatty acids and glycerol. • Energy storage molecules • Phospholipids part of cell membrane
Fatty Acid Structure • Carboxyl group (COOH) forms the acid. • “R” group is a hydrocarbon chain.
A Representative Fatty Acid
Unsaturated Fatty Acid Saturated Fatty Acid
Glycerol
Synthesis of a Fat
A Phospholipid

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Lipids. Aims. Elements of lipids Structure of glycerol & fatty acids Condensation reactions to form triglycerides Phospholipids. http://www.youtube.com/watch?v=vccnaNSwUs4. What does this have to do with lipids? How does the hump help the camel survive?

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Lipids. Large non-polar organic molecules that do not dissolve in water. Lipids Overview. They are large organic molecules They contain carbon, hydrogen, and oxygen Stores fats as long term energy Contains lots of calories 2x the amount of carbohydrates

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PL. GL. TAG. GPL. SL. SL. FA. S. FA. FA. C. MS/OS. P. A. Lipids. Eric Niederhoffer SIU-SOM. Storage (neutral). Membrane (polar). G. FA. P. G3P. Glycerophospholipids. General Structure. PA. Net Charge pH 7 = -1. PC. PI45BP. Net Charge pH 7 = 0. Net Charge pH 7 = -4.

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LIPIDS. As. Introduction.

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Lipids. Lipids are composed of:. Carbon Hydrogen Oxygen BUT: Lipid molecules have a larger number of Carbon and Hydrogen and a smaller number of Oxygen than Carbohydrates. “CHO”. Properties of Lipids. Fats, oils, and waxes are lipids.

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Lipids. Macromolecule #2: Lipids. Hydrophobic (nonpolar) = insoluble in water Contain C, H, O (less O than carbs), sometimes P Main types: Triglycerides (fats & oils) Phospholipids Steroids. 1. Triglycerides (fats & oils). Saturated = each C has 4 single covalent bonds with H

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Lipids. Lipids. long-term energy storage do not consist of polymers insoluble in polar substances structural components of cells – ex. phospholipids are the major building block in cell membranes "messengers" (hormones) . Lipid Construction.

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Lipids. Lipids. Made up of C, H and O Can exist as fats, oils and waxes They are insoluble in water They are a good source of energy (9 k cal / g ) They are poor conductors of heat Most fats & oils are triglycerides. Lipids. Biomolecules that contain fatty acids or a steroid nucleus.

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LIPIDS. Classification of lipids. Triglycerides or triacylglycerol Waxes Phospholipids or Phosphoglycerides Steroids. Triacylglyerol. Fats : triglycerides which are solid at room temperature ( most saturated triglycerides, e.g. beef, fat, or lard)

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Lipids. Fats, Oils, Etc. Made up of…. Carbon Hydrogen Oxygen. Function. Energy Storage and Insulation 9 calories per gram versus 4 calories per gram for carbohydrates. No MONOMER!! (Gasp!). Because the structure of every lipid is so different, we cannot label a “monomer”

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Lipids. Biology A/Biochemistry. 4 Types of Macromolecules. Carbohydrates Main source of energy. Quick source of energy. Lipids Alternate source of energy. Long term storage of energy. Proteins Build structures such as bone and muscle. Nucleic Acids Store and transmit genetic information.

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