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
simulation you added Na+Cl- to test its effect on glucose diffusion. Explain why there was no effect. Activity 3: 1. Which membrane resulted in the greatest pressure with Na+Cl- as the solute? Why? 2. Explain what happens to the osmotic pressure with increasing solute concentration. 3. If the solutes are allowed to diffuse, is osmotic pressure generated? 4. If the solute
Lab Report 1: Cell Transport Mechanisms and Permeability Using PhysioEx 8.0 Introduction The purpose of these experiments is to examine the driving force behind the movement of substances across a selective or semiperpeable plasma membrane. Experiment simulations examine substances that move passively through a semipermeable membrane, and those that require active transport. Those that move passively through the membrane will do so in these simulations by facilitated
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
Transport Mechanisms and Permeability: Activity 3: Simulating Osmotic Pressure Lab Report Pre-lab Quiz Results You scored 100% by answering 4 out of 4 questions correctly. 1. Which of the following is true of osmosis? You correctly answered: c. It is a type of diffusion. 2. Which of the following occurs when a hypertonic solution is added to cells? You correctly answered: d. The cells shrink. 3. The variable that affects osmotic pressure is You correctly answered: a. the concentration of nondiffusing solutes
In Kidney failure cases urea, creatine, uric acids and electrolytes move from the blood to the dialysate with the net effect of lowering their concentration in the blood. RBC s WBC s and plasma proteins are too large to diffuse through the pores of the membrane. Hemodialysis patient are exposed to 120 to 130 L of water during each dialysis treatment. Small molecular weight substances can pass from the dialysate in to patient’s blood. So the purity of water used for dialysis is monitored and
The environmental contamination is a most important universal problem in present scenario. Diverse use of pesticides in agricultural usage causes to numerous environmental problems. These pesticide residues in drinking water lead to increasing concern in health prospect. Vast usage of some pesticides contributes to contamination of water bodies mostly, surface and ground water sources. Misuse, accidental spillage, and improper disposal have resulted in extensive groundwater pollution (Edgehill et
CC Clare 54-year-old female here today with concerns for a lump under her right arm. She also would like to talk about her medications. HPI The patient tells me she is in going through a lot lately. She is working two jobs. One is at Me and Ollies and at times, she has to wake up very early to open the store. She is also working a second job in the evening as a customer service representative. She says that this has added a lot of stress to her life working these two jobs. In addition, her
print powder jar a quick shake before opening the lid” then goes on to say “remove the lid and place the fingerprint brush inside the lid” (Spraggs, 2007). The lid will retain enough powder to start processing the latent print. A precise amount of pressure applied while spinning the brush will produce a good print with good ridge detail. He mentions that too much powder will fill the ridges and over process the print and too little will not produce enough, keeping in mind that too much contact between
out of the production well through gravity drainage. Mass transfer of vaporized solvent to heavy oil and the gravity drainage are the key parameters which mainly determine the production rate of heavy oil and bitumen with reduced viscosity. This report provides a brief idea about the current heavy oil and bitumen deposits in Canada, a better insight of the Vapex process and the factors which affect the efficiency of the process. Several factors that scale up the performance of the process and important