of a cell is the cell membrane. The cell Membrane is a thin protective coating around a cell that regulates what goes in and out of the cell. An important part of regulating this is passive transport. Passive transport is the movement of materials through membranes without any input of energy. One type of passive transport is diffusion. Passive transport is the diffusion of substances across a membrane. In diffusion‚ molecules will usually move from where the substance is more concentrated
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the Diffusion Rate of Substances Jesselyn P. Rodriguez Group 4 Section X-2L August 13‚ 2013 ------------------------------------------------- ------------------------------------------------- ------------------------------------------------- ABSTRACT The effect of molecular weight on the rate of diffusion of substances is tested using two tests: the glass tube test and the agar-water gel test. In the glass tube test‚ two cotton balls were soaked in two different substances‚ one
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The Effect of Molecular Weight on the Diffusion Rate in Substances Nadjah B. Hadji Amer Gladys A. Oliveros Rochelle R. Yaῆez Jan Remon B. Caliguid Group 2- Sec. W78-1 August 14‚ 2013 A scientific paper submitted in partial fulfilment of requirements in Biology 101.1 under Prof. Kimverly Hazel Coronel‚ 1st sem‚ 2013-2014 ABSTRACT The effect of molecular weight on the rate of diffusion was assessed using the agar-water gel test. The agar-water gel set up was composed of a six petri
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ABSTRACT The effect of molecular weight on the rate of diffusion was measured using two tests namely: the glass tube test and the agar-water test. The set-up of the glass tube test used two cotton balls of the same size. One cotton ball is moistened with hydrochloric acid (HCl) and the other one is moistened with ammonium hydroxide (NH4OH). The two cotton balls were inserted in both ends of the glass tube. NH4OH which has a lighter molecular weight (35.0459 g/mole) diffused with a faster rate (dave=20
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Diffusion Introduction Diffusion is the net movement of ions or molecules from a region of high concentration to a region of low along the concentration gradient until equilibrium has been reached. The steeper the gradient the faster the rate of diffusion. There are a few types of diffusion. Three (3) of those are: Facilitated Diffusion- refers to diffusion of substances across a cell membrane with the help of transport protein. Dialysis- refers to the diffusion of solutes across a semipermeable
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Helps with Diversity Workplace communication is important in companies with workplace diversity. Good communication skills helps to lift of inferior between employees due to their race‚ religion and language. Companies that provide good communication within the organization can avoid cultural differences and miscommunication between the employees. When there is good communication skills around‚ the operation will run smoother. Effective communication causes productivity to increase‚ errors to decrease
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more substance (solid‚ liquid or gas) into another substance. A solution can be a solid solution (e.g. an olivine)‚ a liquid solution for example an aqueous solution that results from the dissolution of sodium chloride solid crystals in water or it can be a gas solution (e.g. a mixture of oxygen gas and carbon dioxide gas in the air). This solution may be ideal or non-ideal. The type of solution whether it is ideal or non-ideal‚ will have a different thermodynamic function. Thermodynamics is a system
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two laws that can possibly explain why the tanker imploded. One of the laws is Charles’‚ this law basically explains that there is a relationship between temperature and volume. When heat is added to a liquid volume and temperature increase‚ but in a molecular level the molecules move faster bouncing around in the container it’s in. The equation to Charles’ is V1/T1 = V2T2 .One of other laws is Boyle’s‚ the law deals with the relationship of pressure and volume. Boyle’s law helps explain how much
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is used. It is provided with a pressure gauge‚ a digital thermometer and a safety valve. An aneroid barometer is used to determine atmospheric pressure. 1 2 3 Drain valve Heater Overflow Variation of saturation temperature with pressure Thermodynamics Laboratory Manual Marcet boiler 4 5 6 7 8 9 Temperature sensor Pressure relief valve Filler opening with plug Pressure gauge Master switch Boiler with insulating jacket 11 Temperature display 10 Heater switch The drain valve
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How does perseverance help Salva survive in a difficult environment? In this part of the story‚ Salva was running away from all the war and actually survived due to luck. According to the text‚ on chapter 2 page 8‚ it states‚ “BOOM! Salva turned and looked. Behind him‚ a huge black cloud of smoke rose‚ flames darted out of its base. Overhead‚ a jet plane veered away like a sleek evil bird. This quote clearly shows that Salva got through the war without getting hurt or killed. In this part of
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