“Cell Transport Lab” Hypothesis: I hypothesis that there will be a movement of molecules out of the egg‚ and will move into the water solution. Osmosis will occur within the egg‚ and in the process the molecules of the egg will diffuse. Time (hrs) | Observations | Circumference (cm) | * 0 | * Egg is of normal weight and size * No membrane is being shown‚ and is almost perfect | * 14 centimeters | * 24 | * Egg has gotten larger taking in some of the water * Shell is soft
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Introduction: Experiment #1 and #2 are meant to show the processes of Simple and Facilitated diffusion. Both the solutes and water were used to show how they diffuse through a semi permeable membrane. In experiment #1 the process of using the solute and deionized water shows how much of the solute is passed through the membrane. In experiment #2 the rate of facilitated diffusion relied on the amount of carrier proteins available to transport the solute molecules. Hypothesis – Activity 1: Simulating Simple
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does the amount of time it takes to reach equilibrium change with the number of carriers used to “build” the membrane? The time needed decreases Does the Diffusion rate of Na/Cl change with the number of receptors? Yes What is the mechanism of the Na/Cl transport? The selective plasma membrane If you put the same amount of glucose in the right beaker as in the left‚ would you be able to observe any diffusion? No they would be equal Does being unable to observe diffusion necessarily mean that
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Exercise 5: Cardiovascular Dynamics: Activity 1: Studying the Effect of Blood Vessel Radius on Blood Flow Rate Lab Report Pre-lab Quiz Results You scored 100% by answering 5 out of 5 questions correctly. 1. Blood flow is measured in You correctly answered: b. ml/min. 2. Which of the following has the greatest effect on blood flow? You correctly answered: a. blood vessel radius 3. Which of the following would not result in a decrease in the blood vessel radius? You correctly answered: c. vasodilation
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Exercise 1: Cell Transport Mechanisms and Permeability Worksheet Student Name: Student ID# Student instructions: Follow the step-by-step instructions for this exercise found in your lab manual and record your answers in the spaces below. Submit this completed document by the assignment due date found in the Syllabus. Rename this document to include your first and last name prior to submitting‚ e.g. Exercise1_JohnSmith.doc. Please make sure that your answers are typed in RED. Grading:
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Name: TORI SCHARKLEY Exercise 1: Cell Transport Mechanisms and Permeability: Activity 1: Simulating Dialysis (Simple Diffusion) Lab Report Pre-lab Quiz Results You scored 75% by answering 3 out of 4 questions correctly. 1. The driving force for diffusion is You correctly answered: b. the kinetic energy of the molecules in motion. 2. In diffusion‚ molecules move You correctly answered: a. from high concentration to low concentration. 3. Which of the following dialysis membranes has the largest pore
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of resistance mechanisms to drug treatment. Various cellular changes that have been implicated in the development of drug resistance in cancer cells include: the increased expressions of P-glycoprotein (a multidrug transport protein) and multidrug resistance-associated protein (MRP-1); increased levels of the cellular detoxification protein‚ glutathione; and changes in the expression of apoptosis associated proteins such as Bcl-2‚ FasL and p53‚ which generally results in promoting cell survival [1
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PHYSIO EX 1 Simulating Dialysis (Simple Diffusion) 1. Describe two variables that affect the rate of diffusion. The temperature of the solutions and the difference in concentration of the ion or molecule between the sides of the membrane 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? Since the chemical formula for urea is (NH2)2CO and its molecular weight is about 60. It will not diffuse through the
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The Lipid Barrier of the Cell Membrane‚ and Cell Membrane Transport Proteins The structure of the membrane covering the outside of every cell of the body is discussed in Chapter 2 and illustrated in Figures 2–3 and 4–2.This membrane consists almost entirely of a lipid bilayer‚ but it also contains large numbers of protein molecules in the lipid‚ many of which penetrate all the way through the membrane‚ as shown in Figure 4–2. The lipid bilayer is not miscible with either the extracellular
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Unit 2: Supply and Demand Study Guide and Review Questions Rachel Bracker‚ Scott Doyle‚ Lyra Hall and Christine Wong Winter 2010 Period 3 Terms Background and Straightforward concepts: 1. Competition: rivalry in supplying or acquiring an economic service or good 2. Free Market: a market where the price is arranged by the mutual consent of sellers and buyers‚ without government or trader manipulation 3. Equilibrium: when supply and demand are balanced at a price
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