ZhenXiaoChang_OsmosisLab

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Durham College *

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201

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Chemistry

Date

Feb 20, 2024

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pdf

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4

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2/8/2021 PhysioEx Exercise 1 Activity 3 PhysioEx Lab Report Exercise 1: Cell Transport Mechanisms and Permeability Activity 3: Simulating Osmotic Pressure Name: Zhen Xiao Chang Date: 8 February 2021 Session ID: session-d441ba96-a934-98b4-e26a-8a640a4bfbbc 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: It is a type of diffusion. 2 Which of the following occurs when a hypertonic solution is added to cells? You correctly answered: The cells shrink. 3 The variable that affects osmotic pressure is You correctly answered: the concentration of nondiffusing solutes. 4 The net movement of water would be into the cell in a You correctly answered: hypotonic solution. Experiment Results Predict Questions 1 Predict Question 1: What effect do you think increasing the Na* CI" concentration will have? Your answer: increased osmotic pressure. 2 Predict Question 2: What do you think will be the pressure result of the current experimental conditions? Your answer: pressure above the left beaker. Stop & Think Questions 1 Why do you think there is no pressure change? You correctly answered: Sodium is able to diffuse through the pores. 2 Why do you think there was no pressure change? https://media.pearsoncmg.com/bc/bec_Omedia_ap/physioex/10/ex1/act3/# 1/4
2/8/2021 PhysioEx Exercise 1 Activity 3 You correctly answered: There is no net movement of water because the solute concentrations are the same. Experiment Data Run Solute MWCO Start Pressure Start Pressure Rate Number Conc.L |L(mm Hg)| Conc.R R(mm |(mM/sec) (mM) (mM) Hg) 1 Na* CI 20 5.00 170 0.00 0 0.0000 1 Albumin 20 0.00 170 0.00 0 0.0000 1 Glucose 20 0.00 170 0.00 0 0.0000 2 Na* CI 20 10.00 340 0.00 0 0.0000 2 Albumin 20 0.00 340 0.00 0 0.0000 2 Glucose 20 0.00 340 0.00 0 0.0000 3 Na* CI 50 10.00 0 0.00 0 0.0167 3 Albumin 50 0.00 0 0.00 0 0.0000 3 Glucose 50 0.00 0 0.00 0 0.0000 4 Na* CI 100 0.00 136 0.00 0 0.0000 4 Albumin 100 0.00 136 0.00 0 0.0000 4 Glucose 100 8.00 136 0.00 0 0.0000 5 Na* CI 100 0.00 0 0.00 0 0.0000 5 Albumin 100 0.00 0 0.00 0 0.0000 5 Glucose 100 8.00 0 8.00 0 0.0000 6 Na* CI 200 0.00 0 0.00 0 0.0000 6 Albumin 200 0.00 0 0.00 0 0.0000 6 Glucose 200 8.00 0 0.00 0 0.0036 7 Na* CI 200 0.00 153 0.00 0 0.0000 7 Albumin 200 9.00 153 0.00 0 0.0000 7 Glucose 200 0.00 153 10.00 0 0.0044 Post-lab Quiz Results You scored 100% by answering 4 out of 4 questions correctly. 1 If you double the concentration of a nondiffusible solute that is on one side of a membrane, the osmotic pressure will You correctly answered: double. 2 Which membrane did not allow Na* CI" to pass through? https://media.pearsoncmg.com/bc/bec_Omedia_ap/physioex/10/ex1/act3/# 2/4
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