Lipids Triglycerides Phospholipids Sterols Lipids Lipids are a class of nutrients that includes: –Triglycerides (fats and oils) –Phospholipids –Sterols.

Slides:

Advertisements

Similar presentations

Lipids: Fats & Oils & Wax & Steroid

Advertisements

Biochemistry Part V Lipids. Lipids A class of organic molecules that are insoluble in water A class of organic molecules that are insoluble in water There.

Five Sense Biochemistry

The Lipids Triglycerides Phospholipids Sterols Copyright 2005 Wadsworth Group, a division of Thomson Learning.

Lipids Highly diverse structures Unifying property Hydrophobic: little to no affinity to water Contains hydrocarbons, which form nonpolar covalent bonds.

AP Biology Lipids: Fats & Oils AP Biology Lipids energy storage.

Ch. 5.3: LIPIDS Objectives:

AP Biology Intro to Organic Molecules & Lipids AP Biology Life is based on Carbon Carbon atoms are versatile building blocks Special bonding properties.

LIPID REVIEW Dr. E. Lipids A. Hydrophobic B. Hydrophillic C. Nonpolar D. Polar E. Both A & C F. Both A and C.

Lipid Review What are the four examples of lipids? 2.

Insoluble Biological Molecules

Fats and Lipids.

Examples Fats Oils Waxes Steroids Functions Long-term energy storage Main component of cell membranes Hormones Insulation/cushioning.

Fats (an example of a lipid) Glycerol – Has three –OH groups – Polar molecule Soluble in water Fatty Acids – Long chains of hydrocarbons Insoluble in water.

Lipids Hydrophobic Elements: C H O Ratio of H:O= H greater than O C 57 H 110 O 6.

AP Biology Lipids energy storage AP Biology Lipids Lipids are composed of C, H, O long hydrocarbon chain 4 types of lipids fats phospholipids steroids.

Lipids What are the kinds of lipids? Lipids Fats Fats Waxes Waxes Steroids Steroids Phospholipids Phospholipids.

LIPIDS. Where can you find lipids? Lipid Functions and Properties Energy storage – Better source of energy than carbs Cushioning Insulation Lipids are.

Lipids. Include fats, oils, waxes, and steroids –All hydrophobic Consist of 1 glycerol molecule and 3 fatty acids. –Glycerol is an alcohol –Fatty acid.

AP Biology Lipids: Fats & Oils AP Biology Lipids  Lipids are composed of Carbon, Hydrogen, and small amts of Oxygen  long hydrocarbon chains (H-C)

ARE LIPIDS BAD FOR US? GOOD VS. BAD. Lipids are a diverse group of hydrophobic molecules Lipids are the one class of large biological molecules that do.

Concept 5.3: Lipids include fats and steroids.. Lipids Group of organic compounds that include fats, oils, and waxes. Composed of carbon, hydrogen, and.

Structure and function of cell components (i)Carbohydrates (ii)Lipids (iii)Proteins (iv)Nucleic Acids (v)Membranes (vi)Cytoskeleton.

LIPIDS --- Fats & Oils. LIPIDS include: fats oils cholesterol phospholipids.

Lipids. Nutrition: Lipids Fats: are the most concentrated of the energy- producing nutrients Animal fats: from eggs, dairy products, and meats high in.

A Diverse group of Hydrophobic Molecules

LIPIDS AKA: FATS. LIPIDS- large nonpolar organic molecules 18%-25% of body weight fewer covalent bonds fat-marbled meats, egg yolks, milk, oils, waxes.

Biochemistry Lipids Commonly known as fats. Includes oils, waxes, & steroids. Contain C,H,O (no 2:1 ratio) Hydrophobic (water fearing molecules) Main.

BIOLOGICALLY IMPORTANT MACROMOLECULES - LIPIDS. LIPIDS Fats Composed of carbon, hydrogen and oxygen -Fewer oxygen, greater carbon and hydrogen Hydrophobic.

Lipids 11/04/10. –Many contain carbon chains called fatty acids (monomer). –Fats and oils contain fatty acids bonded to glycerol. –Do not dissolve in.

LIPIDS The Molecules of Cells CH 3. Lipids Lipids include fats, which are mostly energy-storage molecules Lipids include fats, which are mostly energy-storage.

Lipids: Fats, Oils & Waxes

Five Sense Biochemistry Love thy Lipids. Lipid Chemistry Main Elements of Lipids: Carbon hydrogen & oxygen The ratio of hydrogen to carbon is greater.

Chapter 10 Notes Lipids Lipids are organic compounds that are insoluble in water and have a greasy feel There are three types of lipids in foods and the.

Lipids Mini Lecture Radjewski. Lipids PDQ 1 Lipids are hydrocarbons (composed of C and H atoms); they are insoluble in water because of many nonpolar.

Lipids To model how triglycerides are formed.

Biochemistry Unit.  Lipids are macromolecules that provide long term energy storage, insulation, cushioning of internal organs and are the main component.

Lipids contain the elements Carbon Hydrogen Oxygen There are two main groups: Triglycerides Phospholipids.

Learning Outcomes: B4 Describe chemical structure of lipids compared to carbohydrates Recognize structural diagrams of: glycerol, saturated and unsaturated.

What are Lipids? – Nonpolar, organic molecules – Composed of hydrogen (H), carbon (C), and oxygen (O) – Lipids consist of two types of molecules - glycerol.

AP Biology QOD: What is better for your health: Butter, Margarine, Olive Oil or Crisco? LG: Understand the structure and function of different types of.

Lipids. Lipids  Lipids are fats (solid), oils (liquid), waxes and phospholipids  Lipids contain carbon (C), Oxygen (O), Hydrogen (H) and sometimes other.

Macromolecules Lipids. Common myths and misconceptions…do you have something to learn?  /19279/ cw/index.html.

Macromolecules Lipids. Common myths and misconceptions…do you have something to learn?  /19279/ cw/index.html.

Lipids. peanut butter is 51% fat Lipids Lipids include commonly called substances - fats, oils, waxes, steroids & phospholipids They are made almost.

LIPIDS  Composed of Carbon, Hydrogen, and Oxygen  Greater than 2:1 ratio of H:O  Includes fats, oils, phospholipids, and cholesterol  Building blocks.

© SSER Ltd.. Lipids are a diverse collection of substances that have a range of different functions in living systems Lipids are compounds that serve.

Activity #8: Lipids.

Lipids & proteins SBI 4U.

Chapter 3: Biochemistry

Long term energy storage

Macromolecule -- Lipids

Lipids Objective: B2 - Compare the structures & functions of carbohydrates, lipids, proteins, & nucleic acids & their organization into long complex molecules.

LIPIDS Diverse group of organics Insoluble in water

Lipids ( Fats).

Lipids: Fats & Oils

Triglycerides Energy storage (fat)

Lipids Made up of C, H and O Can exist as fats, oils and waxes

Lipids ( Fats).

Long term energy storage

Catalyst Take out your homework so that we may go over it.

Presentation transcript:

Lipids Triglycerides Phospholipids Sterols

Lipids Lipids are a class of nutrients that includes: –Triglycerides (fats and oils) –Phospholipids –Sterols –Waxes Composed of carbon, hydrogen, and oxygen. Lipids are hydrophobic (insoluble in water)

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

Fatty Acids Fatty acids vary in carbon chain lengths, degree of unsaturation, and number of double bonds. –Degree of Saturation- Saturation affects the physical characteristics of the fat and its storage properties

Saturated vs. Unsaturated Saturated - Saturated fatty acids carry the maximum possible number of hydrogen atoms.. Stearic acid, an 18-carbon saturated fatty acid

Saturated vs. Unsaturated Unsaturated – Unsaturated fatty acids have at least one double bond. There are 2 types –Monounsaturated fatty acid (MUFA) Oleic acid, an 18-carbon monounsaturated fatty acid

Saturated vs. Unsaturated Polyunsaturated fatty acids (PUFA) –have at least two double bonds. Linoleic acid, an 18-carbon polyunsaturated fatty acid

Saturated and Unsaturated Fatty Acids Help Shape Foods

Saturated Fatty Acid Unsaturated Fatty Acid

Glycerol An alcohol composed of a three carbon chain.

Synthesis of a Fat

Triglycerides TG (fats and oils) – composed of 3 fatty acids attached to a glycerol

TG

Phospholipids contain glycerol, 2 fatty acids and a phosphate group. Soluble in both water and fat Roles of phospholipids –Transport lipids through Plasma membrane –Make up the cell membrane

Phospholipids

Sterols –cholesterol, vit D, testorone –Multiple carbon-ring structure. –Found in plant and animal foods –Cholesterol is found in animal foods only - meat, eggs, fish, poultry and dairy products

Sterols Roles of sterols –Needed to make bile acids, sex hormones, adrenal hormones and vitamin D –Component of cell membranes –Cholesterol forms deposits in the artery wall causing artherosclerosis.

Sterols