Physioex 8.0

Topics: Diffusion, Osmosis, Transport phenomena Pages: 1 (589 words) Published: October 4, 2009
Site Name: PhysioEx 8.0Author Name: Stabler, ZaoLocation on Site: Exercise > Lab Quiz 100% Correct of 20 items:20 Correct: 100%0 Incorrect: 0% Submitted on Sun Sep 27 2009 15:44:17 GMT-0600 (Mountain Daylight Time) --------------------------------------------------------------------------Question 1 Differential permeability can also be described as: Correct: the allowance of only certain substances to pass through a membrane without hindrance. Compare the molecule size and the MWCO for the membrane. --------------------------------------------------------------------------Question 2 Passive transport includes which of the following processes? Correct: Osmosis Passive transport includes osmosis. --------------------------------------------------------------------------Question 3 Refer to Activity 1: Simulating Dialysis (Simple Diffusion). Which of the following passed through the 20 MWCO membrane? Correct: Water Water is the only substance small enough to pass through the membrane. --------------------------------------------------------------------------Question 4 Refer to Activity 1. Which solute(s) passed through the 100 MWCO membrane? Correct: Na+ and urea --------------------------------------------------------------------------Question 5 Refer to Activity 1. Which solute demonstrated the highest diffusion rate through the 100 MWCO? Correct: Na+ --------------------------------------------------------------------------Question 6 Refer to Activity 2: Simulating Facilitated Diffusion. Which solute(s) were able to travel against their concentration gradients? Correct: None could travel against their concentration gradient. --------------------------------------------------------------------------Question 7 Refer to Activity 2. One way that the rate of glucose transport could be increased is: Correct: Increase the concentration of glucose --------------------------------------------------------------------------Question 8...
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