are more fluid than those rich in saturated fatty acids • Membranes must be fluid to work properly. Fluid Unsaturated hydrocarbon tails with kinks Membrane fluidity Viscous Saturated hydrocarbon tails • Cholesterol has different effects on membrane fluidity at different temperatures: – Warm temperatures (e.g.‚ 37°C): restrains 37° movement of phospholipids – Cool temperatures:
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Transport Processes (SKKK 2313) ASSIGNMENT # 1 1. Consider a steam pipe of length L=20 m‚ inner radius r1=6 cm‚ outside radius r2=8 cm‚ and thermal conductivity k=20 W/m.k. The inner and outer surfaces of the pipe are maintained at average temperatures of T1=150oC and T2=60oC‚ respectively. Obtain a general relation for the temperature distribution inside the pipe under steady conditions‚ and determine the rate of heat loss from the steam through the pipe. Assume that heat transfer is one-dimensional
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huge population China must find ways to sustain their natural resources in order to maintain all of these people. Chinas population is expected to peek in 2030. One of the most important natural resources China is seeing being depleted do to overpopulation is water. The more people a country has the more industrial needs‚ agricultural needs and consumption needs arise. This means that the amount of water in China needs
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Advantage Transport System 1. What should the company do about the new business contract? ATS should take advantage of the new business opportunity that Alec discussed. If ATS gets the contract with the large domestic auto manufacturer‚ that would not only increase their revenue but ultimately open the door for other opportunities. ATS should also see where the company can make adjustments in pricing and offer special promotions for their current customers. After careful review of recent loss
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12. Briefly discuss the role of the electron transport chain in cellular respiration. In your explanation‚ discuss and identify key molecules involved in this process and explain their relationship which each other in terms of how they contribute to the main cellular purpose of this process. Electron transport chain plays a key role of in the production of oxygen in cellular respiration. ETC uses many enzymes located on the inner mitochondrial membrane during the production of oxygen. The source
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Active transport: requires that a cell expend energy to move molecules across a membrane against the solute’s concentration gradient (the side where it is more concentrated) Feedback inhibition: Metabolic reaction is blocked by its products. A product acts as an inhibitor of one of the enzymes in the pathway to regulate metabolism. Centriole: a structure in an animal cell composed of microtubule triplets arranged in a 9+0 pattern. An animal usually has a pair of centrioles within each of its centrosomes
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Sebastian Krug‚ s082349 New Economy Transport 1 1 NET (A) - Question 1 As you can see on the rst spreadsheet the NPV of the overhaul with the new engine and control system (1:117:413; 38 Euro) is higher than the NPV without the new stu (480:211; 75 Euro). In this case Mr. Handy should choose the overhaul with the new stu . First of all the entire calculation is in real numbers. I’ve done it in nominal numbers too (with the same results) but it was too much to hand in. The assumptions I’ve
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A comparison and contrast essay on private and public means of transport Cost * Private transportation by far is the more expensive option. The biggest cost of owning your own vehicle is the purchase price. Additionally‚ general maintenance such as oil changes‚ filling the gas tank and auto insurance are ongoing costs of owning a car. Car repairs and parking fees are also sometimes necessary. When choosing public transportation‚ you pay per ride and the fee is usually quite small‚ plus you
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Active and passive transport are biological processes that move oxygen‚ water and nutrients into cells and remove waste products. Active transport requires chemical energy because it is the movement of biochemicals from areas of lower concentration to areas of higher concentration. On the other hand‚ passive trasport moves biochemicals from areas of high concentration to areas of low concentration; so it does not require energy. Comparison chart Active Transport Passive Transport Definition Active
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Immigrants In the 1850’s China was full was full of crime and poverty. There was people starving to death and committing crimes because they couldn’t afford the materials to stay alive. Also‚ overpopulation was a problem in China so this had it more difficult for people to make a living in China. Overpopulation in the 1850’s was such a huge problem that people were distributed with more than 400 people per square kilometer in the coastal areas. China’s population was growing 1.4 percent per year. By
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