We think you have liked this presentation. If you wish to download it, please recommend it to your friends in any social system. Share buttons are a little bit lower. Thank you!
Presentation is loading. Please wait.
Published byMark Cox
Modified over 4 years ago
Copyright © 2003 Pearson Education, Inc. publishing as Benjamin Cummings These compounds are composed largely of carbon and hydrogen –They are not true polymers –They are grouped together because they do not mix with water 3.8 Lipids include fats, which are mostly energy- storage molecules Figure 3.8A
Copyright © 2003 Pearson Education, Inc. publishing as Benjamin Cummings Fats are lipids whose main function is energy storage –They are also called triglycerides A triglyceride molecule consists of one glycerol molecule linked to three fatty acids Figure 3.8B Fatty acid
LE 5-11b Ester linkage Fat molecule (triacylglycerol)
Copyright © 2003 Pearson Education, Inc. publishing as Benjamin Cummings The fatty acids of unsaturated fats (plant oils) contain double bonds –These prevent them from solidifying at room temperature Saturated fats (lard) lack double bonds –They are solid at room temperature Figure 3.8C
Copyright © 2005 Pearson Education, Inc. publishing as Benjamin Cummings Fatty acids vary in length (number of carbons) and in the number and locations of double bonds Saturated fatty acids have the maximum number of hydrogen atoms possible and no double bonds Unsaturated fatty acids have one or more double bonds The major function of fats is energy storage
LE 5-12a Saturated fat and fatty acid. Stearic acid
LE 5-12b Unsaturated fat and fatty acid. Oleic acid cis double bond causes bending
Copyright © 2005 Pearson Education, Inc. publishing as Benjamin Cummings Fats made from saturated fatty acids are called saturated fats Most animal fats are saturated Saturated fats are solid at room temperature A diet rich in saturated fats may contribute to cardiovascular disease through plaque deposits
Copyright © 2003 Pearson Education, Inc. publishing as Benjamin Cummings Phospholipids are a major component of cell membranes Waxes form waterproof coatings Steroids are often hormones 3.9 Phospholipids, waxes, and steroids are lipids with a variety of functions Figure 3.9
LE 5-13 Structural formula Space-filling model Phospholipid symbol Hydrophilic head Hydrophobic tails Fatty acids Choline Phosphate Glycerol Hydrophobic tails Hydrophilic head
Copyright © 2003 Pearson Education, Inc. publishing as Benjamin Cummings Anabolic steroids are usually synthetic variants of testosterone Use of these substances can cause serious health problems 3.10 Connection: Anabolic steroids and related substances pose health risks Figure 3.10
Copyright © 2003 Pearson Education, Inc. publishing as Benjamin Cummings Paper Lipid Synthesis Activity: Using the paper folding diagram for lipid, do the following… 1.What two compounds are needed to synthesize a lipid? 2.How many carbon atoms does glycerol contain? 3.Place an asterisk(s) (*) on the glycerol molecule to indicate the location where a dehydration synthesis could occur to synthesis a triglyceride. 4.How many fatty acid molecules are found on the folding diagram? Number each fatty acid molecule on the paper. Identify each as a saturated or unsaturated fatty acid. 5.How does cholesterol’s structure differ from a triglyderide? 6.What would need to draw on the folding diagram if you wanted to make a phospholipid? If time permits, construct (3) additional questions and answer them.
Lipids- Does this molecule make me look fat? A.P. Biology Chapter 3 Liberty Senior High School Mr. Knowles.
Lipids: Fats & Oils & Wax & Steroid
Lipids Highly diverse structures Unifying property Hydrophobic: little to no affinity to water Contains hydrocarbons, which form nonpolar covalent bonds.
Structure & Function of Large Biological Molecules (Macromolecules)
Notes Chapter 5 p.2 : Lipids
Chapter 5 Macromolecules-Lipids Lipids Lipids are composed of C, H, O – long hydrocarbon chains (H-C) “Family groups” – fats – phospholipids – steroids.
Carbohydrates & Lipids
Lipids - Diverse Hydrophobic Molecules 1. Fats store large amounts of energy 2.Phospholipids are major components of cell membranes 3.Steroids include.
CHAPTER 2 THE STRUCTURE AND FUNCTION OF MACROMOLECULES Lipids - Diverse Hydrophobic Molecules 1.Fats store large amounts of energy 2.Phospholipids are.
Introduction Lipids are an exception among macromolecules because they do not have polymers. The unifying feature of lipids is that they all have little.
Chapter 5: Macromolecules Macromolecules A large molecule in a living organism –Proteins, Carbohydrates, Nucleic Acids Polymer- long molecules built.
Fats and Lipids.
Lipids Fats, Oils and Other Things. Lipid Basics Made of C,H,O monomer = glycerol + fatty acids hydrophobic - don’t dissolve in water oil and.
Examples Fats Oils Waxes Steroids Functions Long-term energy storage Main component of cell membranes Hormones Insulation/cushioning.
Chapter 3 Carbon and the Molecular Diversity of Life.
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.
AP Biology Discussion Notes Wednesday 9/30. Goals for Today: 1.Be able to describe and compare the building, breaking, components, and functions of Lipids/Fats.
© 2019 SlidePlayer.com Inc. All rights reserved.