Physioex 9.0 Review Sheet Exercise 1 Cell Transport Mechanisms and Permeability Name Lab Time/Date ___ Activity 1 Simulating Dialysis (Simple Diffusion) 1. Describe two variables that affect the rate of diffusion. Size of material and concentration 2. Why do you think the urea was not able to diffuse through the 20 MWCO membrane? How well did the results compare with your prediction? The molecules were too large to pass through. This is what I predicted
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Tim Readmond AP Biology Lab Report I. Title a. Modeling Diffusion and Osmosis II. Introduction a. If one places a 1.0 M solution of glucose inside a bag and then places that bag into a beaker containing a 1.0 M solution of sucrose‚ the percent of mass lost in the bag is 10.5%. The solution in the bag is hypertonic while the solution in the beaker is hypertonic‚ which is why water moves from the bag to the beaker and the bag loses mass. b. The purpose of this experiment is to see whether
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Exercise 1: Cell Transport Mechanisms and Permeability: Activity 4: Simulating Filtration Lab Report Pre-lab Quiz Results You scored 100% by answering 4 out of 4 questions correctly. 1. Filtration is a process that You correctly answered: c. is passive. 2. Filtration is dependent upon a You correctly answered: b. hydrostatic pressure gradient. 3. The filtrate You correctly answered: d. All of these answers are correct. 4. An important place that filtration takes place in the body is in You correctly
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PCS125 Lab – The Simple Pendulum Objective and Background Objective: The Objective of this experiment is to examine the simple harmonic motion and to determine the value of the acceleration due to gravity from the analysis of the period of the simple pendulum. [1] Background: There are three equations that will be used to calculate the period of motion of the simple pendulum. They are the slope of the line of the graph of T² against L‚ and the gravity of the pendulum motion. The period of
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Introduction A computerized simulation experiment will be conducted in order to study the cell transport mechanism via the cell’s selectively permeable membrane and passive processes of simple and facilitated diffusion. The plasma membrane is a gateway which allows nutrients to enter the cell and keep undesirable substances out‚ hence‚ making it selectively permeable. One method of transport is called active transport‚ which uses ATP to transport substances through the membrane. The other is
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Abstract This experiment was carried out to perform staining methods on microbes‚ explain the mechanisms of staining‚ namely‚ simple staining‚ and learn how to use the microscope. The experiment setting was kept as sterile as possible when conducting the experiment. The microbes under the microscope were drawn out and labelled. In conclusion‚ different staining techniques are used to determine the presence of certain exterior structures of the bacteria like the cell envelope or just to identify
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Dialysis of starch‚ glucose and sucrose Introduction: Research question: Does the dialysis tube only allow certain substances to pass through the pores because of their size? Dependent and Independent variables: Independent variables: The temperature of the classroom The size of the molecules The size of the pores in the tube The concentration of the indicators Dependent variables: The substance will either pass the pores of the tube or not The result will vary in darkness (color) Controlled
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Hemodialysis Hemodialysis is a form of dialysis where the blood in the body is continuously removed and passed through an artificial kidney which cleans it. The treatment is an intermittent treatment and is performed ranging from three hours thrice weekly to eight or nine hours six to seven times a week. The dialysis procedure is time consuming and a routine for CKD patients every week. The patient has to report to a dialysis center and if not lucky has to wait till his turn comes
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Experiment: At this experiment we are investigating does the temperature affect how quickly the particles diffuse to an even concentration throughout the water‚ we are going to do this experiment by using food coloring to see how quick the food coloring diffuse in hot water and cold water. Materials: • • • • • • • • One beaker Hot plate Ice Water Food coloring Thermometer Timer Eye dropper Hypothesis:I think the food coloring will spread faster‚ because the particle in the hot water have more
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does not have need of an active role for the membrane. Osmosis and dialysis are also occasionally called passive transports because they too do not require an active role for the membrane. Osmosis is movement of water across a semipermeable membrane of low concentration to a solution of high concentration. On the other hand diffusion is movement of molecules from a high concentration to a low concentration. Osmosis is a form of diffusion but a distinction would be that it deals essentially with water
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