Lipids Commonly known as: Fats Oils Waxes
10/14/20152 1. Organic Compound Made up of carbon Feels waxy or oily to the touch
10/14/20153 d.Protects our major organs Function of a lipid: a.Stores energy ~ long term b. Main component of our cell membranes c. Insulates our body
10/14/20154 Lipids are made up of: C, H and O Same set of elements found in carbs ……unused carbs get stored as body fat.
10/14/20155 Like carbohydrates and proteins, lipids are made up of repeating units. The repeating units in lipids are called: -Triglycerides “3”
10/14/20156 Many bonds need to be broken -need to add: water and enzymes “lipase” H2OH2O Lipds are then broken down by the process “Hydrolysis”
10/14/20157 Lipids contain more energy per gram than any other food source…very calorie loaded
10/14/20158 Types of lipids: 1.FATS a. Are solid at room temperature b. Found in animal products Lard Butter Meat Egg yolks Milk
10/14/20159 c. Known as “saturated” fats -unhealthy because they contain: -heart unhealthy “cholesterol”
10/14/ OILS a.Normally liquid at room temperature b.Found in plant products Margarine Vegetable Oils Nuts Olives
10/14/ c.Known as “unsaturated” fats/lipids -contains same amount of calories as saturated but are more healthier for you because they do not contain cholesterol.
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10/14/ Waxes a. Found in plants and animals b. Form of protection -covers all major organs c. Waterproof structures Cuticle on leaves Earwax
10/14/ Phospholipids a. Used to create our cell membranes.
10/14/ Two test for the presence of lipids: 1. Brown Bag Test -leaves a translucent spot -light passes through it
10/14/ Yummy!!!!!!!
10/14/ Solubility Test -lipids are soluble in lighter fluid BUT insoluble in water.
10/14/ Nucleic Acids -4 th Organic Compound -made up of carbon H, O, N and Phosphorus -There are only two type: -DNA -RNA
10/14/ Function of nucleic acids: -To store and transmit our genetic code. Nucleic Acids are made up of many repeating units known as nucleotides. To Be Continued in a later chapter….