Cell Transport Mechanisms and Permeability

1362 WordsFeb 18, 20136 Pages
Lab 1: Cell Transport Mechanisms and Permeability Purpose The purpose of this experiment is to have a better understanding of the subject matter and to understand the difference between active and passive cellular transport. It will also help to define diffusion and describe the process that occurs when certain solutes come in contact and are either stopped or move through the plasma membrane. Hypothesis I believe the plasma membrane is selective about what is able to and not able to pass through it. It stops undesirable substances from passing and it will take in nutrients that are acceptable or needed. Materials & Methods Materials: Online Pearson 's Lab. Methods: Follow the steps and procedures…show more content…
Your answer : c. The filtration rate will increase. Predict Question 2: What will happen if you increase the pressure above the beaker (the driving pressure)? Your answer : c. The filtration rate will increase, and the concentration of the solutes in the filtrate will increase. Stop & Think Questions: The reason none of the solutes were present in the filtrate was that Your answer : c. the concentration of the solutes was too low. Correct answer: b. the solutes were all too large to pass through. What does an increase in the driving pressure correspond to in the body? You correctly answered: d. an increase in blood pressure Experiment Data: Run Number Solute MWCO Pressure Filter Rate Residue Start Conc. Filter Conc. 1 Na+ Cl- 20 50 1.00 present 5.00 0.00 1 Urea 20 50 1.00 present 5.00 0.00 1 Glucose 20 50 1.00 present 5.00 0.00 1 Powdered Charcoal 20 50 1.00 present 5.00 0.00 2 Na+ Cl- 50 50 2.50 present 5.00 4.81 2 Urea 50 50 2.50 present 5.00 0.00 2 Glucose 50 50 2.50 present 5.00 0.00 2 Powdered Charcoal 50 50 2.50 present 5.00 0.00 3 Na+ Cl- 200 50 10.00 present 5.00 4.81 3 Urea 200 50 10.00 present 5.00 4.74 3
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