Chapter 7 Membrane Structure and Function Days 8 Objectives -You will understand that membranes are fluid -The structure results in a semi-permeable membrane -Passive transport requires no energy -Active transport requires energy -Bulk transport of molecules either by exocytosis or by endocytosis. Lab 1: Diffusion and Osmosis p. 127
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Chapter 7 Membrane Structure and Function Days8 Objectives -You will understand that membranes are fluid -The structure results in a semi-permeable membrane.
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Chapter 7Membrane Structure and Function
Days 8
Objectives-You will understand that membranes are fluid
-The structure results in a semi-permeable membrane
-Passive transport requires no energy
-Active transport requires energy
-Bulk transport of molecules either by exocytosis or by endocytosis.
Lab 1: Diffusion and Osmosis
p. 127
Cell Membranes Are Made up of Macromolecules
Lipids -Specifically Phospholipids
-Form a bilayer with nonpolar, hydrophobic region in the middle.
Proteins -Various proteins are embedded.
Carbohydrates -Carbohydrates extend out and old the cell in place to the ECM
Factors That Affect The Fluidity Of The Membrane
- Cell membranes are mainly held together by nonpolar attractions --- Much weaker then covalent bonds