Florida International University

ZOO 3731L

Lab 1 Ex.2

1)Molecules need a carrier protein to help them move across a membrane

2. Which of the following is true of facilitated diffusion?

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3. Which of the following would not affect the rate of facilitated diffusion?

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?

Stop & Think Questions:

3. What happened to the glucose transport rate when the glucose concentration was increased from 2 mM to 8 mM?

4. Describe the conditions that resulted in the fastest rate of glucose transport.

5. Why do you think equilibrium wasn't reached?

Post-lab Quiz Results

1. What variable(s) increased the rate of facilitated diffusion of glucose?

2. For facilitated diffusion, increasing the concentration of glucose on one side of the membrane is the same

3. When all of the membrane carriers are engaged, or busy, we say they

4. Na+ Cl- had no effect on glucose transport because