PhysioEx Exercise 1 Activity 2

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Feb 20, 2024

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2/3/24, 12:00 PM PhysioEx Exercise 1 Activity 2 https://media.pearsoncmg.com/bc/bc_0media_ap/physioex/10/ex1/act2/ 1/3 PhysioEx Lab Report Exercise 1: Cell Transport Mechanisms and Permeability Activity 2: Simulated Facilitated Diffusion Name: Sophie Vanderkallen Date: 3 February 2024 Session ID: session-7d60975f-6128-f82d-b174-73af43efd1c4 Pre-lab Quiz Results You scored 100% by answering 4 out of 4 questions correctly. Experiment Results Predict Questions Stop & Think Questions Molecules need a carrier protein to help them move across a membrane because You correctly answered: they are lipid insoluble or they are too large. 1 Which of the following is true of facilitated diffusion? You correctly answered: Movement is passive and down a concentration gradient. 2 Examples of solutes that might require facilitated diffusion include You correctly answered: all of the above. 3 Which of the following would not affect the rate of facilitated diffusion? You correctly answered: the amount of intracellular ATP. 4 Predict Question 1: What effect do you think increasing the number of protein carriers will have on the glucose transport rate? Your answer: The glucose transport rate will increase. 1 Predict Question 2: What effect do you think adding Na Cl will have on the glucose transport rate? Your answer: The glucose transport rate will decrease. 2 + - What happened to the glucose transport rate when the glucose concentration was increased from 2 mM to 8 mM? 1
2/3/24, 12:00 PM PhysioEx Exercise 1 Activity 2 https://media.pearsoncmg.com/bc/bc_0media_ap/physioex/10/ex1/act2/ 2/3 Experiment Data Run Number Solute Start Conc. L (mM) Start Conc. R (mM) Carriers Rate (mM/sec) 1 Na Cl 0.00 0.00 500 0.0000 1 Glucose 2.00 0.00 500 0.0008 2 Na Cl 0.00 0.00 500 0.0000 2 Glucose 8.00 0.00 500 0.0023 3 Na Cl 0.00 0.00 700 0.0000 3 Glucose 2.00 0.00 700 0.0010 4 Na Cl 0.00 0.00 700 0.0000 4 Glucose 8.00 0.00 700 0.0031 5 Na Cl 0.00 0.00 100 0.0000 5 Glucose 10.00 0.00 100 0.0017 6 Na Cl 0.00 2.00 700 0.0042 6 Glucose 2.00 0.00 700 0.0010 Post-lab Quiz Results You scored 100% by answering 4 out of 4 questions correctly. You correctly answered: The glucose transport rate increased. Describe the conditions that resulted in the fastest rate of glucose transport. You correctly answered: 700 glucose carrier proteins and 8 mM glucose. 2 Why do you think equilibrium wasn't reached? You correctly answered: The membrane proteins were saturated. 3 + - + - + - + - + - + - What variable(s) increased the rate of facilitated diffusion of glucose? You correctly answered: increasing the concentration of glucose and increasing the number of membrane carriers. 1 For facilitated diffusion, increasing the concentration of glucose on one side of the membrane is the same as You correctly answered: making the concentration gradient steeper. 2 When all of the membrane carriers are engaged, or busy, we say they are You correctly answered: saturated. 3
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