Practical 2.1- The Effect of Temperature on Membranes Objective To investigate the effect of temperature on membrane structure Introduction Beetroot Pigments Beetroots contain Betalains which are the red pigments present in the cell vacuole. Betalains are soluble in water and they contain nitrogen. Betalains extracted from beetroot is commonly used as food dye because it is not known to cause any allergic reactions. Beetroot Picture taken from http://tipdeck/how-to-cook-beet-root Structure
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funnel-shaped clouds. At ground level they usually leave a path of destruction only about 50 m (170 ft) wide and travel an average of only about 8 to 24 km (5 to 15 mi). Contact with the ground is often of an intermittent nature lasting for a period of usually less than a couple of minutes in any particular area because the funnel tends to skip along. Tornadoes generally exhibit a certain characteristic cycle of behavior between formation and final disappearance. The first sign of a tornado may be a strong
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The Cell membrane surrounds all living cells and is the most important organelle‚ there is also a similar plasma membrane that surrounds all the organelles except for the ribosome. The membrane controls how and what substances can move in and out of the cell/organelle The structure of the membrane is often referred to as the “Fluid Mosaic Model”; this is because of the way it is structured It is composed of phospholipids‚ proteins‚ and carbohydrates‚ which are arranged in a fluid
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The Change in Social Values in America The change in social values in American society in the last 50 years has changed the face of education in the following: 1) The structure of the family has changed; 2) Teachers and caregivers have become surrogate parents‚ and 3) Religion has become less important. Families are no longer made up exclusively of the traditional father and stay-at-home mother. There are families run by a single parent‚ blended families‚ and gay and lesbian households.
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Change is imminent. As resistant as people may be to alter their patterns everything changes over time‚ especially social values. Whether it be new technology‚ changes in the economy‚ or new understandings‚ values never stay the same. Nothing reflects these values more than advertising and trying to appeal to the peoples need to “fit in” with the values of society. Since the beginning of advertising the sellers are trying to find ways to make the consumers buy into their goods or services and
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eco-efficiency creating more value with less impact foreword In 1991‚ we in the then Business Council for Sustainable Development were looking for a single concept‚ perhaps a single word‚ to sum up the business end of sustainable development. Finding no such concept on the lexicographer s shelf‚ we decided we would have to launch an expression. After a contest and much agonizing‚ we came up with eco-efficiency. In simplest terms‚ it means creating more goods and services with ever less use of resources
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PLASMA MEMBRANE SELECTIVE PERMEABILITY= allowing some substance to cross it more easily than others composed of: Phospholipids Proteins Carbohydrates Cholesterol FLUID MOSAIC MODEL Phospholipids are primary lipids(constantly moving‚ fluidly) AMPHIPATHIC-containing hydrophobic and hydrophilic regions Mosaic part=not made of one thing Freeze-fracture studies:way to view what’s inside FLUIDITY OF MEMBRANE Move within bilayer Most of lipids and some proteins‚ drift laterally
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Describe the characteristics and explain the causes‚ of tsunamis. (8 marks) A Tsunami is a large and potentially destructive sea wave often produced by a submarine earthquake‚ subsidence or an underwater volcanic eruption. They occur when a large volume of water is displaced in the ocean. The characteristics of tsunamis differ slightly from normal sea waves. For one‚ they often have extremely long wave lengths‚ in deep water an initial wavelength can be up to 100km. Their amplitude contrasts with
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Prometheus says that "to be free‚ a man must be free of his brothers." By reference to the story‚ explain what Prometheus means by freedom and why he values it. In what significant ways is freedom non-existent in the society from which he escapes and what are the consequences of that lack of freedom? In Ayn Rand’s Anthem‚ Prometheus says that "to be free‚ a man must be free of his brothers." Freedom is a concept totally forbidden in the society in Anthem. Prometheus is given consequences for
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early 2000s‚ but Americans are still privy of increasing crime rates. Economic and political conditions are also changing the face of violence and crime‚ with some stating that state economics and policies are reducing crime. Conversely‚ other Americans opine that such state policies and conditions are becoming catalysts for crimes‚ yet the numbers do not add up evidently. In all‚ the majority of American hold the opinion that crime is indeed increasing especially since 2002. The following illustrative
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