------------------------------------------------- Rancidification pathways[edit] Three pathways for rancidification are recognized.[3] Hydrolytic rancidity[edit] Hydrolytic rancidity occurs when water splits fatty acid chains away from the glycerol backbone in triglycerides (fats). The chemical term is ester hydrolysis. Usually this hydrolysis process goes unnoticed‚ since most fatty acids are odorless and tasteless. A particular problem arises with butter‚ which contains triglycerides with a
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cellulose for support. Examples of carbohydrates are sucrose‚ glucose‚ fructose‚ starch‚ cellulose‚ and glycogen. A good dietary source for carbohydrates would be bread and grains. Fats - Fats are a complex of fatty acid chains attached to a glycerol backbone. Fats are a type of lipid‚ and are used for energy‚ energy storage‚ structure‚ hormones‚ waterproofing‚ and insulation. Types of food would depend on the fats‚ saturated or unsaturated. Butter‚ oils‚ certain meats‚ and certain foods all
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The body is made up of a number of systems that all interlink and produce everything we need in order to survive. Within the body there is the digestive system; the circulatory system‚ the nervous system‚ the muscular system‚ the skeletal system and the reproductive system. These systems are all part of one another and they share organs‚ tissues and cells and that is how they interlink. The diagram above shows each system and where they are located in the body. Each system is shown in a different
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energy source‚ fat and protein metabolism‚ energy reserves in stored glycogen‚ blood glucose fuels brain and CNS • examples - starch‚ sugars (breads‚ pasta‚ starchy vegetables‚ fruit sugars‚ simple sugars‚ etc.) c. Fats • made of fatty acids glycerol • main functions • saturated sources (dairy products‚ meat‚ margarine‚ chocolate‚ coconut oil‚ etc.)‚ unsaturated/MUFAs/PUFAs sources (safflower/olive/soybean oils‚ tuna‚ salmon‚ etc.) 2. The CNS always needs a constant feed of gluclose form
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ChApter 5 Lipids ChApter oBJeCtiVeS Chapter 5 is designed to allow you to: 1. List four classes of lipids (fats) and the role of each in nutritional health. 4. Explain how 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
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Student Mr. Teacher AP English Literature 07 December 2013 Algae Biodiesel "Most fossil fuel supply experts project a future in which world crude oil supply drops two to five per cent per year... If it happens in 2015: by 2030 people must manage on 33% less oil‚ in 2045 they have 50% less‚ in 2060 they have 75% less" (“Fossil Fuel Depletion”). Fuel is essential in our society‚ and this depletion has affected and will continue to affect everyone. Because fossil fuels are nonrenewable‚ biodiesel
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Week 7 Digestion Lecture Study Guide Based on information found in the lecture folder or other sources‚ answer the following questions. 1. What is digestion? Digestion is the mechanical and chemical breakdown of food into usable molecules 2. List some other names of the digestive tract. Alimentary Canal (GI Tract) 3. Explain where and how the mechanical breakdown of food occurs. Teeth begin digestion mechanically‚ Chewing (“mastication”) breaks apart food‚ 2 sets
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Grade 11 University Biology Exam Teacher: Mr. Anderson SBI 3U1 Jan 21‚ 2009 Time: 2 hours Total Marks /111 Pages 1-8 Name: _________________________ Instructions 1. All questions should be answered on the exam page. 2. There will be no talking and/or other disruptions during the exam. 3. If you have any questions raise your hand and a teacher will come to your desk to help you. 4. When you are finished please raise your hand the teacher will come to you
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happen‚ we say it has reached the dynamic equilibrium. Factors Affecting the Rate of Diffusion (How fast diffusion happens) Particles that Move Through the Plasma Membrane Through Diffusion 1. Substances soluble in fat: fatty acid‚ glycerol‚ some vitamins (A‚D‚E‚K) 2. Neutral particles: water‚ oxygen‚ carbon dioxide‚ Example of Diffusion Between alveoli and blood capillaries in the lung during gases exchange. OSMOSIS What is Osmosis? Osmosis is the diffusion of a water through
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nutrients which are required to maintain and regulate other systems in the body. Enzymes secreted within the digestive system have a role of breaking down food from proteins into amino acids‚ starch into glucose and fats into a mixture of fatty acids and glycerol. It can be analysed that the two body systems work together. Which are the respiratory system and the cardiovascular system. Oxygen is inhaled and enters the respiratory system. It travels down into the lungs through the trachea. Once inside the
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