lipids are digested and absorbed. 2. Distinguish between fatty acids and triglycerides. 5. Name the classes of lipoproteins and classify them according to their functions. 3. Differentiate among saturated‚ monounsaturated‚ and polyunsaturated fatty acids in terms of structure and food sources. 6. List the function of lipids‚ including the two essential fatty acids. 7. Discuss the implications of various fats‚ including omega-3 fatty acids‚ with respect to cardiovascular disease. 8. Characterize
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Lloyd Term 2‚ 2014 Lauric Acid Experiment Teacher: Mr Oliver Contents 1.0 Introduction Elements and the compounds can exist in distinctive physical states. Liquid‚ solid‚ gas and plasma. Every element and compound has a distinctive melting and boiling point. When a substance reaches its melting and boiling point it will change phase. For example the molecules in a solid being heated gain energy and eventually are able to not only vibrate but
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reproduction and other aspects of basic metabolism. (Dutchen‚ 2010) What is important to remember is there are two different kinds of fatty acids‚ saturated and unsaturated. Sometimes referred to as the bad fat and the good fat. Saturated fats are made of fatty acids that do not have any double bonded carbons‚
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PHOSPHOLIPIDS Along with sterol‚ phospholipids make up 5% of lipids in diet Best know phospholipids is lecithin Has backbone of glycerol 2 of it 3 attachments occupied by fatty acid like those of triglycerides The third space occupied by a phospholipids group and a molecule of choline Soluble in both fats and water Fatty acids make phospholipids soluble in fat Phosphate group allow phospholipids to dissolve in water and this allows the phospholipids used as an Emulsifier to mix with water
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molecule with three fatty acids attached‚ glycerol forms backbone different triglycerides are formed by various fatty acids that attach. Types of triglycerides: Saturated Fat‚ Unsaturated Fat‚ Monounsaturated Fat‚ and Polyunsaturated Fat Saturated Fat: all carbons are saturated with hydrogens there are no double bonds in fatty acids‚ molecules lay flat and tight with each other solid at room temp‚ most animal fat are saturated Unsaturated Fat: one or more of the fatty acids contain a carbon
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Acid rain is a rain or any other form of precipitation that is unusually acidic‚ meaning that it possesses elevated levels of hydrogen ions (low pH). It can have harmful effects on plants‚ aquatic animals and infrastructure. Acid rain is caused by emissions of sulfur dioxide and nitrogen oxide‚ which react with the water molecules in the atmosphere to produce acids. Governments have made efforts since the 1970s to reduce the release of sulfur dioxide into the atmosphere with positive results. Nitrogen
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Acid Strength Grade 10- Science (chemistry) 11/23/2012 Mariana Boff Acids Strength Acids are substances that contain hydrogen atoms which detach to form hydrogen ions when the acid is dissolved. Acids are divided into two main categories: the strong and weak acids. The stronger ones are very corrosive and can cause severe skin burns‚ here are some examples: nitric acid (HNO3)‚ hydrochloric acid (HCl) and sulfuric acid (H2SO4). The weaker ones are less corrosive and when in touch with the
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triglycerides. ** The fatty acids in foods influence the composition of fats in the body. ** Fats are a mixture of saturated monounsaturated and polyunsaturated fatty acids. ** Lipids that are firm at room temperature are called fats‚ and lipids that are liquid at room temperature are called oils. ** Monounsaturated fats fatty acids: have one double bond. ** Oils rich in monounsaturated fats include: canola‚ olive‚ and peanut oils. ** Polyunsaturated fatty acids have two or more points
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energy storage • • • • • • • • Fat cell mobilizes triglycerides Breaks fatty acids off glycerol molecule Become free fatty acids and sent to bloodstream Free fatty acid taken up by cell (i.e. muscle cell) Broken down into 2 carbon units at a time by beta-oxidation 2 carbon piece becomes Acetyl-CoA Acetyl-CoA enters citric acid cycle Citric acid cycle leads to ETC which forms ATP (Sanders‚ 2014) Saturated vs. Unsaturated Fatty Acids SATURATED UNSATURATED • • • • • • • • • • Same conformation No
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or micronutrients (needed in smaller quantities). The macronutrients are carbohydrates‚ fats‚ fiber‚ proteins‚ and water. The micronutrients are minerals and vitamins. The macronutrients (excluding fiber and water) provide structural material (amino acids from which proteins are built‚ and lipids from which cell membranes and some signaling molecules are built) and energy. Some of the structural material can be used to generate energy internally‚ and in either case it is measured in joules or calories (sometimes
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