Exam2ReviewSheetA.docx - BIO 168: Exam 2 Review Sheet...

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BIO 168: Exam 2 Review SheetChapter 3-Cell theory-Membrane composition – phospholipids, proteins, and cholesterol-Know which part of the phospholipid is hydrophilic/hydrophobic-Integral vs peripheral proteins-Glycocalyx-Cell junctions-Membrane Transport:-Passive TransportDiffusion- simple diffusion, facilitate diffusion, osmosis; Factors affecting speed of diffusion-Active transport-Primary and secondary active transport-Vesicular transport – endo vs. exocytosis-(Resting) Membrane potential – voltage across a membrane in millivolts-Negative charge just inside the cell compared to positive charge just outside the membrane-Know importance of the Na+ and K+ in maintaining the membrane-Understand chemical signaling – use of G-protein receptors to generate a second-messenger-Organelle functions – (mitochondria, ER, golgi, lysosomes, ribosomes, nucleolus, centrioles)-Parts of the cytoskeleton – microfilaments, intermediate filaments, microtubules-Intermediate are only for movement – permanent fixtures
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