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 size? Your answer :
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REVIEW SHEET EXERCISE 1 Cell Transport Mechanisms and Permeability 1. Match each of the definitions in Column A with the appropriate term in Column B. |Column A |Column B | |__E__ term used to describe a solution that has a lower |a. diffusion | |concentration of solutes compared to another solution |b. facilitated diffusion
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Exercise 1: Cell Transport Mechanisms and Permeability: Activity 1: Simulating Dialysis (Simple Diffusion) Lab Report Pre-lab Quiz Results You have not completed the Pre-lab Quiz. 09/20/11 page 1 Experiment Results Predict Question: Predict Question 1: The molecular weight of urea is 60.07. Do you think urea will diffuse through the 20 MWCO membrane? Your answer : c. No‚ not at all. Predict Question 2: Recall that glucose is a monosaccharide‚ albumin is a protein with 607 amino acids‚ and
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Transport Mechanisms and Permeability Name __Christopher Scott_ Lab Time/Date ___1/15/2014 Activity 1 Simulating Dialysis (Simple Diffusion) 1. Describe two variables that affect the rate of diffusion. ___ Two variables that affect rate of diffusion are molecule size and plasma membrane composition. A larger molecule will diffuse more slowly than a smaller molecule. The lipid content of the plasma membrane determines permeability of certain molecules. A plasma membrane with a higher lipid content
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Contents 5 To the instructor 6 To the Student 7 How to Perform an Experiment 9 Safety Concerns 11 Science lab Safety Reinforcement Agreement Experiments 33 Macromolecules of life 57 The Microbiome 68 Cell Membrane Transport 89 Mitosis 118 Phenotype and genotype 132 DNA and Protein Synthesis 195 The Macrobiome APPENDiX 226 laboratory Equipment and Techniques 231 Material Safety Data Sheets 233 How to Write lab Notes
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Chapter 17 End of life care includes: palliative care- comprehensive care for patients whose disease is not responsive to cure; care also extends to patients’ families; management of psychological‚ social‚ and spiritual problems as well as control of pain and other physical symptoms; to improve pt and family’s quality of life hospice- care provided to terminally ill patient’s and their families; death has been accepted‚ bereavement for family; generally associated with palliative care that is
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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. ___ ___ 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? ___ 3. Describe the results of the attempts to diffuse glucose and albumin through the 200 MWCO membrane. How well did the results compare with your prediction
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add higher concentrations of sugar to the dialysis tubing‚ then the net movement of coffee into the dialysis tubing will increase. Materials scale or balance 24" dialysis tubing 4 transfer pipets sugar scissors rubber bands four coffee cups - they need to be roughly the same size 250ml graduated cylinder ruler small sauce pan 3 clean containers (600mls (about 20 ozs) or larger) Procedure: 1. Cut four 6-inch pieces of dialysis tubing and soak in a coffee cup filled with tap water
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further than Methylene blue‚ solid (molecular mass- 319.85 g/mol) since it weighs less. In osmosis is diffusion of H2O across a selectively permeable membrane (dialysis tubing). There is only movement of water‚ not solute‚ across the plasma membrane. Water moves from a solution to a lower solute to prevent a passage of water across an osmosis membrane‚ which is known as osmotic pressure. Osmotic pressure increases with increasing solute concentrate. What will be the changes of weight when a 10 mL tap
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glucose. 5. The beaker was more hypotonic in regards to the IKI solution while the baggie was more hypotonic in regards to the starch. 6. The iodine would seep out of the bag and turn the beaker solution purple. 8. The dialysis tubing represents a cell membrane. 9. Glucose will only continue to diffuse until there are equal amounts in the bag as well as in the
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