EVPP 110 Lecture - Matter and Energy - Membranes Diffusion Lifes Building Blocks - Student - Fall 20

EVPP 110 Lecture - Matter and Energy - Membranes Diffusion Lifes Building Blocks - Student - Fall 20

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EVPP 110 Lecture Dr. Largen Membranes, Diffusion, Life’s  Building Blocks
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Topics Membranes Diffusion Life’s building blocks
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Membrane Structure and Function Membrane plasma membrane (aka cell membrane) selectively permeable ( aka differentially permeable)
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iClicker Question #1 Selectively permeable membranes allow ______________. A. ANY substance to enter but nothing can leave B. ANY substance to leave but nothing can enter C. some substances to in/out and others are prohibited from entering/leaving D. nothing to enter or leave
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Membrane Structure and Function Plasma membrane (cell membrane) Composition phospholipid molecules (phospholipid bilayer) “head” o polar = hydrophilic “ tail” o non-polar = hydrophobic Other molecules Proteins Sugars
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iClicker Question #2 Which portion of a phospholipid molecule is polar? A. head B. tail
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Membrane Structure and Function plasma membrane surfaces
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Plasma membranes are made ONLY of a bilayer of phospholipid molecules. A. true
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This note was uploaded on 01/21/2011 for the course EVPP 110 taught by Professor All during the Winter '08 term at George Mason.

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EVPP 110 Lecture - Matter and Energy - Membranes Diffusion Lifes Building Blocks - Student - Fall 20

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