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    Membrane Experiment

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    gradient must be suitable with the pore size of each membrane because the loss of permeate flow is an undesirable condition for this experiment. After finishing the experiment‚ the volume of water collected increases according to the sequence of reverse osmosis‚ nanofiltration‚ microfiltration and ultrafitration.

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    For Learning Centre use only Activity 1: Simulating Dialysis (Simple Diffusion) Lab Report Review Sheet Results 1. 2. Describe two Variables that affect the rate of diffusion. The two variables that affect the rate of diffusion are: A. The size of the molecule. The larger molecule will diffuse more slowly than the smaller molecule. B. The nature of plasma membrane. If the membrane is composed of lipid portion.‚ only lipid soluble molecules can pass through while water molecules

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    Translocation

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    Translocation A. The Munch pressure flow model The Principal of Pressure-Flow Model of Phloem Transport The Münch pressure-flow model is an explanation for the movement of organic materials in phloem .By the Münch pressure-flow experiment‚ two dialysis tubings are connected by a glass tube. The dialysis tubings only permeable to water or particles which have smaller size than the pores of the tubing‚but impermeable to the larger solutes.As larger molecules such as proteins and polysaccharides(starch)

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    Cell Physiology

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    Review Sheet Exercise 1 Cell Transport Mechanisms and Permeability Activity 1: Simulating Dialysis (Simple Diffusion) • Describe two variables that affect the rate of diffusion: Two variables that affect the rate of diffusion are size and concentration gradient. The molecular size vs the MWCO size of the membrane can either increase‚ decrease‚ or prevent diffusion. The greater the concentration gradient the greater the diffusion rate due to molecules moving from areas of higher concentration

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    Cell Transport Mechanisms and Permeability 1 EXERCISE 1 OBJECTIVES 1. To define the following terms: differential permeability‚ passive and active processes of transport‚ diffusion (simple diffusion‚ facilitated dif- fusion‚ and osmosis)‚ solute pump‚ pinocytosis‚ and phagocytosis. 2. To describe the processes that account for the movement of sub- stances across the plasma membrane‚ and to indicate the driving force for each. 3. To determine which way substances will move passively

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    consideration osmosis‚ and my knowledge about it‚ my prediction is that as the molarity of the solution under which the cells are exposed will increase‚ also the amount of plasmolysed cells‚ counted from amount of undamaged cells taken into account‚ will also increase. Hence‚ theoretically‚ the amount of plasmolysed cells in distilled water should be 0‚ while at 1mol solution‚ all of the relevant cells should be plasmolysed. This is so‚ because plasmolisys occurs due to loss of water through osmosis‚ which

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    Panda

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    Diffusion & Osmosis: Introduction: This experiment was performed to demonstrate the process of osmosis and to show visible as well as quantitative evidence proving that osmosis occurred. Through the tasks of determining the percent concentrations in two different solutions‚ we were studying the process of osmosis. Osmosis is the best way to perform this experiment because as we went through the experiment‚ the weight of the beaker/dialysis tubing changed and the only logical explanation was

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    Basics of Biology

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    Osmosis Case study You are a veterinarian working in Indooroopilly and return from lunch to find a nurse treating a six year old kelpie‚ Baxter. Baxter is very lethargic‚ has an increased heart rate‚ and when you pinch his skin the fold remains visible. The owner tells you that they knew something was wrong when‚ upon returning to the outdoor car park from a three hour shopping trip‚ they saw Baxter passed out on the back seat. The temperature in the car would have been very high and Baxter

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    Physio Ex 9.0

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    ACTIVITY 1: Simulating Dialysis (Simple Diffusion) Answers 1. The molecular weight of urea is approximately 60. Which of the membranes can it pass through? a. 50 MWCO membrane b. 100 MWCO membrane c. 200 MWCO membrane d. Both the 100 and 200 MWCO membranes D. Both the 100 and 200 MWCO membranes 2. True or False: A solution containing glucose will diffuse faster through a 200 MWCO membrane if it is heated. True 3. The molecular weight of carbon C is 12; the molecular weight of hydrogen

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    diffusion lab reportt

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    experiment‚ we are testing to see if the solution in the beaker moves into the dialysis bag. Which because of that‚ Introduction Diffusion and osmosis are two types of transport mechanisms. Diffusion is the movement of molecules from areas of higher concentrations to areas of lower concentration until the molecules are evenly distributed through the area. Osmosis is the dispersion of water. Our cells are capable of absorbing nutrients because‚ the cell membrane is selectively permeable (some molecules

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