PEX 01 02
Name: Kyle Pockl
Exercise 1: Cell Transport Mechanisms and Permeability: Activity 2: Simulated Facilitated Diffusion Lab Report
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
You correctly answered: d. they are lipid insoluble or they are too large.
2. Which of the following is true of facilitated diffusion?
Your answer : b. Movement is active and against a concentration gradient.
Correct answer: 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
09/28/14
page 1
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?
Your answer : c. The glucose transport rate was unchanged.
Correct answer: 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?
Your answer : d. Not enough energy applied.
Correct answer: b. The membrane proteins were saturated.
Experiment Data:
Run Number
1
1
2
2
4
4
5
5
6
6
Solute
Na+ ClGlucose
Na+ ClGlucose
Na+ ClGlucose
Na+ ClGlucose
Na+ ClGlucose
Start Conc. L
0.00
2.00
0.00
8.00
0.00
8.00
0.00
10.00
0.00
2.00
Exercise 1: Cell Transport Mechanisms and Permeability: Activity 2: Simulated Facilitated Diffusion Lab Report
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
You correctly answered: d. they are lipid insoluble or they are too large.
2. Which of the following is true of facilitated diffusion?
Your answer : b. Movement is active and against a concentration gradient.
Correct answer: 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
09/28/14
page 1
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?
Your answer : c. The glucose transport rate was unchanged.
Correct answer: 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?
Your answer : d. Not enough energy applied.
Correct answer: b. The membrane proteins were saturated.
Experiment Data:
Run Number
1
1
2
2
4
4
5
5
6
6
Solute
Na+ ClGlucose
Na+ ClGlucose
Na+ ClGlucose
Na+ ClGlucose
Na+ ClGlucose
Start Conc. L
0.00
2.00
0.00
8.00
0.00
8.00
0.00
10.00
0.00
2.00