Lab # 2 Diffusion & Osmosis Introduction Kinetic energy‚ a root of energy stored in cells‚ causes molecules to hit into each other and move in new directions. Diffusion is the result of this contact. Diffusion is the random movement of molecules to an area of lower concentration from an area of higher concentration. Osmosis is a type of diffusion. This is the diffusion of water through a selectively permeable membrane from a region of higher water potential to a region of lower water
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Lipids and Phospholipids The main role of phospholipids is that they can form lipid bilayers. It is an amphipathic molecule. The head which is hydrophilic contains a group of phosphate‚ a diglyceride and a simple molecule e.g. choline. The tail is hydrophobic and is made up of fatty acids. Phospholipids receive and transmit signals across the cell membrane and act as a store room for energy. The main role of phospholipids is that they can form lipid bilayers. It is an amphipathic molecule. The
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The purpose of this lab was to observe the rate of osmosis and diffusion‚ as well as the effect of molecular size of the particles on this rate. Part I of the lab was a demonstration of osmosis and diffusion‚ that dealt with raisins in different liquid environments‚ each with a different concentration of sugar. Part IV of the lab was using the same idea as the demonstration‚ by putting objects in different concentrations of a substance; in this case elodea leaves in salt water. In both cases‚ the
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Police Code of Ethics Code of Ethics All personnel prior to assuming sworn status as Virginia Beach police officers will take an oath of office pursuant to the Code of Virginia to uphold the laws of the Commonwealth of Virginia and the City of Virginia Beach. All sworn personnel will govern themselves by adhering to the following Code of Ethics: "As a law enforcement officer‚ my fundamental duty is to serve mankind; to safeguard lives and property; to protect the innocent against deception
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Doing Business in Japan 1. Concept of “nemawashi”. In order to do successful business in Japan‚ it is very important to understand the heart of the Japanese decision-making process‚ known as “nemawashi”. Nemawashi was originally a gardening term‚ which roughly translates as “to dig around the root of a tree a year or two before transplanting it”. In the terms of business‚ “nemawashi” is the organized and efficient consensus building procedure by which the approval of a proposed idea or project
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The effect of size on the effectiveness of diffusion Aim: To use agar blocks infused with 0.1 Molar sodium hydroxide (NaOH) and phenolphthalein to investigate the relationship between shape and surface area: volume ratio on the effectiveness of diffusion. Hypothesis: That for a cube of agar‚ the time taken for complete colourisation due to diffusion of HCl is directly proportional to the cubes volume. Materials: |A block of agar (10cm x 5cm x 3cm) with 0.1M NaOH and |1x 250mL
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Accounting ACFI 3217 P 13007477 Word count: 2‚801 Japan is an Asian country that has a leading position in stock markets and finance industry all over the world‚ which accounting also has a history of more than one hundred years. The accounting system has experienced a lot of significant events and become to be more and more mature. Culture and institutional factors have majorly influenced the development of accounting in Japan‚ and also led the problems in implementing International Financial
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Introduction: Diffusion and osmosis are passive processes of transport. Passive transport involves no disbursement of energy by the cell. Diffusion movement is from high concentration to low concentration‚ which the driving force for this type of movement is kinetic energy particles themselves. Which crystal (Methylene blue‚ solid or Potassium Permanganate KMnO4-purple) will move further than the other due to the driving force (kinetic energy)? My prediction is that Potassium Permanganate KMnO4-
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Diffusion is the molecular net movement from a higher concentration to a lower concentration. For instance‚ when a person is smoking‚ the smoke diffuses into the air. The molecules in the smoke‚ released from the cigarette‚ travel through the air. Here is how it occurs. When molecules are close enough‚ they collide with each other‚ their kinetic energy changes. Due to the direct relationship between diffusion and molecular kinetic energy‚ the molecules move away from the point of the collision as
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Class Discussion Compare the business culture of the UK with that of Japan. How would business negotiations between delegations from the two countries be affected‚ and how would you advise a UK team to prepare for the negotiations? “Nihonjinron”‚ literally “the Theory of the Japanese”‚ has been of fascination for both Japanese and foreigners alike‚ and the industrialised world seems acutely aware that the Japanese are very different to Westerners‚ in ideology‚ religion‚ and business strategies
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