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Web Animations Post Quiz Chapter 5

Plasma Membrane Structure and Transport



This activity contains 3 questions.

Question 1
1
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How does facilitated diffusion differ from passive diffusion?
 
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Question 2
2
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Lactose transport by membrane proteins occurs under conditions in which the concentration of lactose inside the cell is higher than the concentration outside the cell. What type of transport is used to transport lactose into the cell?
 
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Question 3
3
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The plasma membrane is composed of two rows of phospholipids oriented such that their nonpolar hydrophilic tails face each other and their polar hydrophobic head regions face the watery environment.
   
 
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