Lab Report Diffusion is - One of two kinds of passive transport‚ - Diffusion can transport ions from higher concentration to lower concentration region without any other forces. - A net movement of molecules in and out of cell membrane - Diffusion can be affected by the steepness of the concentration gradient. Lab question: Is the rate of diffusion influenced by the presence of second molecule? Prediction: the rate of diffusion is influenced by the presence of second molecule
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PhysioEx™ Lab: Cell Transport Mechanisms and Permeability Activity 1: Simple Diffusion Chart 1 Dialysis Results (Average Diffusion rate in mM/min) Solute Membrane (MWCO) 20 50 100 200 NaCl (—) 0.0150 0.0150 0.0150 Urea (—) (—) 0.0094 0.0094 Albumin (—) (—) (—) (—) Glucose (—) (—) (—) 0.0040 1) Which solute(s) were able to diffuse into the right beaker from the left? NaCl‚ Urea‚ Glucose 2) Which solute(s) did not diffuse? Albumin 3) If the solution in the left beaker
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Explain the types of learning experiences with examples 1. Introduction: Any educational institution is an agency to provide knowledge and wisdom to children. And it is also geared towards the achievement of aims and objectives. The quality of education should be value based and it should give experiences which will shape and modify the behaviour of pupil. Every teacher has a greater responsibility in planning proper activities which will enable children to take active part in different situations
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in the artificial cells to the diffusion rate using the phenolphthalein-NaOH agar and the HCl solution. Lab #2 was a model of diffusion and osmosis‚ in which we filled the model cells with different solutions and determined the rate of diffusion. In lab #3‚ the results demonstrated the interactions between selectively permeable membranes‚ water‚ and solutes and how they are important in cellular and organismal functions. In lab #1‚ the results showed the diffusion rate between the certain time period
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Examining Diffusion and Osmosis Introduction: Purpose: 1. To simulate and observe the diffusion of solutes and the osmosis of water through a semipermeable membrane through color change and sugar tests. 2. To speculate osmosis occurring in dialysis bags and potato cores by comparing percentage change in masses. Background information: Molecules are always in random‚ constant movement due to their kinetic energy. This causes the molecules of a cell to move around and bump into each other
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effect of concentration of acid on the rate of diffusion in agar blocks? Aim: To investigate how the concentration affects the rate of diffusion of hydrochloric acid through agar blocks Research Question: To determine how will different concentrations (0.1M‚ 0.2M‚ 0.3M‚ 0.4M‚ 0.5M) of hydrochloric acid affect the rate of diffusion of sodium chloride through agar blocks? Introduction-include prediction; information you have researched before Diffusion refers to the passive movement of molecules along
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N/C .5cm N/C N/C Molecular Weight Distance Traveled Speed of Diffusion Blue Dye 793g 20.00mm 600mm/hr Red Dye 496g 45.00mm 1350mm/hr Aloe Vera Gel Molecular Weight Distance Traveled Speed of Diffusion Blue Dye 793g 15mm 450mm/hr Red Dye 496g 25mm 750mm/hr 1. The red dye diffused faster in both materials. 2. Yes‚ since the red dye is lighter it diffuses faster. 3. The rate of diffusion does change after time. The longer the dye sits the less it spreads in
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LabMr.P/Pd. 63/17/14 Osmosis and Diffusion Lab Osmosis is a process where molecules pass through a semi permeable membrane from a less concentrated solution into a more concentrated one‚ equalizing the concentrations on each side of the membrane. Diffusion is the spreading of something more widely.During the osmosis and diffusion lab I tested what happens to a fresh egg when osmosis and diffusion across membranes. The eggs were placed in vinegar‚ distilled water‚ and then lastly syrup. The
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EXPERIMENTAL MANUAL Mass Transfer Lab Diffusion Coefficient Apparatus DEPARTMENT OF CHEMICAL ENGINEERING UNIVERSITY OF GUJRAT‚ GUJRAT. GENERAL OPERATING PROCEDURES General Start-up Procedure: Prior to running an experiment‚ students are advised to perform the following startup procedure. Fill the water with clean (preferably filtered) water to approximately 20 mm from the top. Plug the main cable to the electrical supply. Be sure that the voltage of the supply is correct
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Diffusion and Osmosis Experiment Methods/Materials: 7.1 Experiment: Rate of Diffusion of Solutes In the initial set up of this experiment I had 2 sets of 3 screw-cap test tubes that had each been half-filled with 5% gelatin and 1-mL of the correct dye (either potassium dichromate‚ aniline blue‚ or Janus green) in each of the test tubes. I labeled the 3 test tubes of set 1 with which die they contained and marked them “5 ˚C”. Then with the other set I did the same exact thing‚ except I labeled
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