Pre-lab Quiz Results You scored 50% by answering 2 out of 4 questions correctly.
1. Molecules need a carrier protein to help them move across a membrane because Your answer : a. they are not lipid soluble. Correct answer: d. they are lipid insoluble or they are too large.
2. Which of the following is true of facilitated diffusion? You correctly answered: c. Movement is passive and down a concentration gradient.
3. Examples of solutes that might require facilitated diffusion include Your answer : a. glucose. Correct answer: d. all of the above.
4. Which of the following would not affect the rate of facilitated diffusion? You correctly answered: a. the amount of intracellular ATP
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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? Your answer : b. The glucose transport rate will increase.
Predict Question 2: What effect do you think adding Na+ Cl- will have on the glucose transport rate? Your answer : c. There will be no change in the glucose transport rate.
Stop & Think Questions: What happened to the glucose transport rate when the glucose concentration was increased from 2 mM to 8 mM? You correctly answered: a. The glucose transport rate increased.
Describe the conditions that resulted in the fastest rate of glucose transport. You correctly answered: d. 700 glucose carrier proteins and 8 mM glucose
Why do you think equilibrium wasn't reached? You correctly answered: b. The membrane proteins were saturated.
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