The first type of cell transport is passive processes which are driven by concentration or pressure differences in the interior and exterior of the cell. Velocity of molecular movement: B and C 4. Phase 2- Plateau phase, membrane still depolarized contract. Book's Author: Stabler, Zao Location sources:. Filtration is dependent upon a You correctly answered: b.
How does it compare to your baseline data, and why? Using some simple multiplication and addition, determine the molecular weight of one molecule of glucose. Cell transport mechanisms and permeability answers. Copy and paste all of the activities completed under the Cell Transport Mechanisms and Permeability section into a blank document. Why do you think that this happens? How well did the results compare with your prediction? Explain in your own words why increasing the pore size increased the filtration rate. Again diffusion is the movement of molecules from high concentration to low. Hypothesis This is the hypothesis that you developed before conducting your experiment.
During simulation, the pressure is altered to examine how rate of diffusion changes with the pressure change. Hypothesis I believe the plasma membrane is selective about what is able to and not able to pass. Molecules are moving around to make space. Since, the molecular weight of urea is 60. What is the molecular weight of Cl-? Why did you pick the choice you did? I adjusted the glucose concentration in the left beaker to 2.
Describe on way in which osmosis is similar to simple diffusion and on way in which is different. Under… Exercise 5: Cardiovascular Dynamics: Activity 1: Studying the Effect of Blood Vessel Radius on Blood Flow Rate Lab Report Pre-lab Quiz Results You scored 100% by answering 5 out of 5 questions correctly. Glucose is a six-carbon sugar. Because depolarization is the shift in electrical potential across a plasma membrane toward 0 to mV and action potential is a rapid voltage change in which a plasma membrane briefly reverses polarity. PhysioEx allows you to repeat labs as often as you like, perform experiments without harming live animals, and conduct experiments that are difficult to perform in a wet lab environment because of time, cost, or safety concerns. Active Simulation Runs 2-4 were also done the same way using 50 mmHg of pressure and 5.
Cell membrane, Concentration, Diffusion 432 Words 2 Pages A the concentration of solutes that a cell is bathed in B a concentration of solutes that is less than the solutes inside the cell C the concentration of solutes inside a cell D a solution that will cause a cell to swell 2 What happens to facilitated diffusion when the protein carriers become saturated? Which of the following might cause the facilitated diffusion of glucose from one solution to another to occur faster? Membrane size is another variable that affects the rate of diffusion because. Less negative What happens… Alkalosis Activity 1: Normal Breathing 1. Match each of the definitions in Column A with the appropriate term in Column B. After flushing the two beakers and increasing the urea concentration to 9. The larger value obtained when more glucose carriers were present corresponds to an increase in the rate of glucose transport. How well did the results compared with your predictions? Predict Question 2: Recall that glucose is a monosaccharide, albumin is a protein with 607 amino acids, and.
Webpage modified October 30, 2008. Non polar molecules have an equal sharing of electrons or a symmetrical arrangement of polar molecules, for example, an hydrogen atom H2 g. A solution surrounding a cell is hypertonic if: a. The nature of plasma membrane. Cell, Cell membrane, Diffusion 953 Words 3 Pages 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.
Do you think glucose is being actively transported or transported by facilitated diffusion in this experiment. I strongly recommend that you keep a photocopy of your assignment for yourself as a backup and for study purposes. One way in which facilitated diffusion is different from simple diffusion is that facilitated diffusion requires the help of carrier proteins bound in the membrane to transport molecules across the membrane. Glucose is a much heavier molecule than NaCl, so it takes a longer time for the glucose to facilitate diffusion, than it does for NaCl. PhysioEx: Cell Transport Mechanisms and. Use the simulation to arrive at an answer. The driving force for diffusion is Your answer : c.
The molecular weight of Cl- is 35. The nature of plasma membrane. Adenosine triphosphate, Cell, Cell membrane 5029 Words 14 Pages Content Frame PhysioEx 9. Submit this completed document by the assignment due date found in the Syllabus. We predicted that glucose and albumin would both.
As you carry out the activities, record all of the information asked for by the assignment. The molecular weight of urea is approximately 60. Materials and methods This is the description you gave of the materials and methods you used to test your hypothesis. Explain why the rate increased. To define the following terms: differential permeability, passive and active processes of transport, diffusion simple diffusion, facilitated dif- fusion, and osmosis , solute pump, pinocytosis, and phagocytosis. Blood, Blood pressure, Efferent arteriole 2267 Words 7 Pages Cell Membranes and Transport Introduction: Beetroot cells contain a red pigment, called betalains, which is stored in the vacuole of the plant cells.