1.The effect of increasing the concentration of sodium chloride from 9 mMto 18 mMin the left beaker was to You 2.Describe the difference between the rate of diffusion seen for sodium and urea. 3.Which of the following solutes did not pass through any of the membranes? 4.When diffusion stops, we say the solution has reachedYou correctly answered: a. equilibrium. 09/29/18 page 4
Review Sheet Results 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 comparewith your prediction? 3.Describe the results of the attempts to diffuse glucose and albumin through the 200 MWCO membrane. How well did theresults compare with your prediction? 4. Put the following in order from smallest to largest molecular weight: glucose, sodium chloride, albumin, and urea. Exercise 1: Cell Transport Mechanisms and Permeability: Activity 2: Simulated Facilitated Diffusion Lab ReportPre-lab Quiz ResultsYou scored 75% by answering 3 out of 4 questions correctly.1.Molecules need a carrier protein to help them move across a membrane becauseYour answer : c. they 2.Which of the following is true of facilitated diffusion? 3.Examples of solutes that might require facilitated diffusion includeYou correctly answered: d. all of the 4.Which of the following would not affect the rate of facilitated diffusion? 09/29/18 page 5
Experiment Results Predict Question:Predict Question 1: What effect do you think increasing the number of protein carriers will have on the glucose transport rate? Predict Question 2: What effect do you think adding Na+ Cl- will have on the glucose transport rate?
You've reached the end of your free preview.
Want to read all 17 pages?