Introduction Diffusion and osmosis are two types of passive transport. Diffusion is a random movement of molecules from an area of high concentration to an area of low concentration. Osmosis is a type of diffusion that diffuses water through a selectively permeable membrane. There were two parts to the experiment‚ the dialysis tubing lab and the potato lab. In the first experiment‚ the dialysis tubing acted as a semi-permeable membrane. A semi-permeable membrane is a membrane
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Lab 04: Sugar Respiration in Yeast Sugars are vital to all living organisms. The eukaryotic fungi‚ yeast‚ have the ability to use some‚ but not all sugars as a food source by metabolizing sugar in two ways‚ aerobically‚ with the aid of oxygen‚ or anaerobically‚ without oxygen. The decomposition reaction that takes place when yeast breaks down the hydrocarbon molecules is called cell respiration. As the aerobic respiration breaks down glucose to form viable ATP‚ oxygen gas is consumed and carbon
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Sugar: the silent killer Sugar can take many forms-such as white‚ raw or brown sugar‚ honey or corn syrup. It has many properties‚ both aesthetic and preservative‚ that make it highly desirable in the processed food industry. It adds taste‚ colour‚ bulk and viscosity to food products. It also prevents mould formation and microbiological activity. According to the 1995 Nutrition Survey‚ Australians were obtaining about 45 per cent of their energy intake from carbohydrates of which 20 per cent
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Osmosis in potato cells Aim: To view and examine the effect different concentrations of sucrose solution has on the movement of water across the cell membrane. Hypothesis: That the potatoes will either increase or decrease in mass‚ due to the effect of the different concentrations. Osmosis will occur. Apparatus: * Fresh potatoes * Apple corer * Scalpel * Petri dishes X 10 * 50ml measuring cylinder * Distilled water * Paper towelling * Sucrose solutions:
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Rise of King Sugar During the seventeenth century the Caribbean economy experienced a great change that would be revolutionary. This change was termed the "Sugar Revolution". The "Sugar Revolution" describes the change from tobacco to sugar as the chief crop of the region and the changes that were associated with it. But was were the factors that led to this great change? The factors include: 1. Competition: West Indian tobacco faced great competition from tobacco grown in the North American
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PROPERTIES OF SOLUTIONS A solution is a mixture of materials‚ one of which is usually a fluid. A fluid is a material that flows‚ such as a liquid or a gas. The fluid of a solution is usually the solvent. The material other than the solvent is the solute. We say that we dissolve the solute into the solvent. Some solutions are so common to us that we give them a unique name. A solution of water and sugar is called syrup. A solution of sodium chloride (common table salt) in water is called brine
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Apprentice” is going to be analysed to see how power relations influence and also how gender can affect speech. The clip is of a board room where two men and two women are speaking. Sir Alan Sugar is in charge and the other three people‚ Yasmina‚ Paula and Ben‚ are being questioned to see who will be fired. Sir Alan Sugar is the first person to talk in the clip and so he will be analysed first. Sir Alan is in charge and it is up to him what will happen with the people in the room. The three people show
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Osmosis and diffusion are sometimes mixed up without much thought‚ but they are very different in many ways. Osmosis is a defined as the movement of water through a semipermeable membrane (). The membrane is fully permeable for the small water molecules‚ but is selectively permeable to any substance that is lager that a normal water molecule. One example might be a glucose and water mixture‚ when the solute is put into one side of a U-shaped tube that has a semipermeable membrane between the solvent
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supply of sugar look like from the point of view of the U.S. market? _The world supply of sugar looks perfectly elastic (horizontal) from the point of view of the U.S. market‚ at a price of 8.3 cents per pound. This conclusion comes from two statements in the case: "Annual world sales of sugar amount to roughly $100 billion" and "Thus‚ for our analysis the 2001 world price of 8.3 cents per pound is assumed to be constant outside the United States." In other words‚ because the U.S. sugar market is
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It was 1861 when the first string of sugar plantations started to develop along the coast of northern Queensland‚ Australia. Queensland had previously been accustomed to having cheap labor at their disposal with the use of servants and convicts. Convict transportation came to a stop and the government soon was in need of increasing income to make up for the lost labor‚ similar to the Europeans around the same time. Europeans were big into trading and had “previously been interested in African nations
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