Simple Diffusion on Cell Transport Mechanisms and Permeability

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Exercise 1: Cell Transport Mechanisms and Permeability: Activity 4: Simulating Filtration Lab Report Pre-lab Quiz Results You scored 100% by answering 4 out of 4 questions correctly. 1. Filtration is a process that You correctly answered: c. is passive. 2. Filtration is dependent upon a You correctly answered: b. hydrostatic pressure gradient. 3. The filtrate You correctly answered: d. All of these answers are correct. 4. An important place that filtration takes place in the body is in You correctly answered: d. the kidneys.

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Experiment Results Predict Question: Predict Question 1: What effect will increasing the pore size of the filter have on the filtration rate? 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 : a. The filtration rate will increase. Stop & Think Questions: The reason none of the solutes were present in the filtrate was that You correctly answered: 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 1 1 1 1 2 2 2 2 3 3 3 3 4 4 4 4 Solute Na+ ClUrea Glucose Powdered Charcoal Na+ ClUrea Glucose Powdered Charcoal Na+ ClUrea Glucose Powdered Charcoal Na+ ClUrea Glucose Powdered Charcoal MWCO 20 20 20 20 50 50 50 50 200 200 200 200 200 200 200 200 Pressure 50 50 50 50 50 50 50 50 50 50 50 50 100 100 100 100 Filter Rate 1.00 1.00 1.00 1.00 2.50 2.50 2.50 2.50 10.00 10.00 10.00 10.00 20.00 20.00 20.00 20.00 Residue present present present present present present present present present present present present present present present present Start Conc. 5.00 5.00 5.00 5.00 5.00 5.00 5.00 5.00 5.00 5.00 5.00 5.00 5.00 5.00 5.00 5.00 Filter Conc. 0.00 0.00 0.00 0.00 4.81 0.00 0.00 0.00 4.81 4.74 4.34 0.00 4.81 4.74 4.34 0.00

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