Simple Diffusion on Cell Transport Mechanisms and Permeability free essay sample

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. An important place that filtration takes place in the body is in You correctly answered: d. the kidneys. 10/04/12 page 1 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. We will write a custom essay sample on Simple Diffusion on Cell Transport Mechanisms and Permeability or any similar topic specifically for you Do Not WasteYour Time HIRE WRITER Only 13.90 / page After filtration, substances that pass through the filter are called the filtrate, which includes You correctly answered: d. ll of the above. 2. The top beaker in the simulation corresponds to Your answer: d. the kidney tubule. Correct answer: a. the blood capillary. 3. Why was there not 100% recovery of the Na+ Cl- solute with any of the membranes? You correctly answered: c. Some of the solute remained on the membrane filter. 4. An increase in blood pressure would probably initially filtration in the kidneys. You correctly answered: b. increase the rate of 010/04/12 page 3 Review Sheet Results 1. Explain in your own words why increasing the pore size increased the filtration rate. Use an analogy to support your statement. How well did the results compare with your prediction? Your answer: it made for a bigger space for the items to pass through 2. Which solute did not appear in the filtrate using any of the membranes? Explain why. Your answer: powdered charcoil. it;s too large 3. Your answer: it made for a bigger space for the items to pass through 2. Which solute did not appear in the filtrate using any of the membranes? Explain why. Your answer: powdered charcoil. it;s too large 3 Why did increasing the pressure increase the filtration rate but not the concentration of solutes? How well did the results compare with your prediction? Your answer: the pressure forced the solutes through, it did not change what went through. References Widdas, W. F. Transport mechanisms in the foetus. British medical bulletin 17.2 (1961): 107-111. Camenisch, Gian, et al. Estimation of permeability by passive diffusion through Caco-2 cell monolayers using the drugs lipophilicity and molecular weight. European journal of pharmaceutical sciences 6.4 (1998): 313-319. Stevens, Bruce R., Jonathan D. Kaunitz, and Ernest M. Wright. Intestinal transport of amino acids and sugars: advances using membrane vesicles. Annual Review of Physiology 46.1 (1984): 417-433. Stevens, Bruce R., Jonathan D. Kaunitz, and Ernest M. Wright. Intestinal transport of amino acids and sugars: advances using membrane vesicles. Annual Review of Physiology 46.1 (1984): 417-433. Park, C. R., et al. The action of insulin on the transport of glucose through the cell membrane. The American journal of medicine 26.5 (1959): 674-684. Gjedde, Albert. High†and low†affinity transport of D†glucose from blood to brain. Journal of neurochemistry 36.4 (1981): 1463-1471. Gerbeau, Patricia, et al. Aquaporin Nt†TIPa can account for the high permeability of tobacco cell vacuolar membrane to small neutral solutes. The Plant Journal 18.6 (1999): 577-587. Passow, Hermann. Molecular aspects of band 3 protein-mediated anion transport across the red blood cell membrane. Reviews of Physiology, Biochemistry and Pharmacology, Volume 103. Springer Berlin Heidelberg, 1986. 61-203.