There are two families of efas omega 3 and omega 6

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There are two families of EFAs: omega-3 and omega-6. Fats from each of these families are essential, as the body can convert one omega-3 to another omega-3, for example, but cannot create an omega-3 from scratch. When the EFAs were discovered in 1923, they were designated Vitamin F. In 1930, further research showed that the two EFAs are better classified with the fats than with the vitamins. Olive oil has both omega 3 and omega 6 EFAs From the Virtual Cell Biology Classroom on ScienceProfOnline.com
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Lipids – Phospholipids Phospholipids are a major component of all cell membranes. Most phospholipids contain a diglyceride, a phosphate group, and a simple organic molecule such as choline. The diglyceride tails are ___________ , but phosphate group end is _____________ . So phospholipids are soluble in both water and oil. Tails from both layers facing inward and the heads facing outward = phospholipid _______. Image: Cell Membrane , Wiki ; From the Virtual Cell Biology Classroom on ScienceProfOnline.com
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Phospholipids - Dietary Phospholipids can act as an emulsifier in foods, enabling oils to dissolve in water. _______, which is made of phospoholipid, is used in cooking sprays and as a food emulsifier. For example, lecithin keeps the cocoa and cocoa butter in a candy bar from separating. Originally discovered in egg yolk, and today commercially extracted from soybeans, but widely present in animal and plant tissues. Remember, if we are eating cells, we are eating phospholipids. Image: Edamame , Tammy Green Steamed and salted, edamame (soybeans) is yummilicious; as addictive as potato chips, but much healthier! Protein, carbs and healthy fats all in one food item. From the Virtual Cell Biology Classroom on ScienceProfOnline.com
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Lipids - Waxes & Steroids Waxes Do not have a hydrophilic head: so completely water insoluble. Many plants, especially those found in warm climates, produce waxes to reduce dehydration. Steroids The central core of a cholesterol molecule (4 fused rings) is shared by all steroids, Cholesterol is precursor to our sex hormones and Vitamin D. Our cell membranes contain __________ (in between the phospholipids) to help keep membrane “fluid” even when exposed to cooler temperatures. Image: Lava Lamp , Wiki; Cholesterol molecule , Wiki; Phospholipids & Cholesterol , Cytochemistry.net From the Virtual Cell Biology Classroom on ScienceProfOnline.com
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Calories (really Kilocalories) Q: What is a calorie? Carbohydrates have ____ calories per gram. Fiber , a type of less-digestible carb has ____ calories per gram. Proteins have _____ calories per gram. Fats have ___ calories per gram. From the Virtual Cell Biology Classroom on ScienceProfOnline.com
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How many calories are in alcohol? ______ calories per gram . But different drinks have different strengths of alcohol.
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