ZOO4232 - Lecture 1 Cellular Biology

ZOO4232 - Lecture 1 Cellular Biology - Reading Assignment...

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1 Reading Assignment Reading Assignment 1 Article on the • Reading Assignment 1 - Article on the Website • Chapters 1 and 2 (pages 17-29) in your textbook. Eukaryotic Cells
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2 The Eukaryotic Cell • Compartmentalized Functions Compartmentalized Functions – The Plasma Membrane – The Cell cytoskeleton – Other cell organelles – Golgi, Mitochondria, Endoplasmic reticulum and Nucleus Signal Transduction and Cell activation • Signal Transduction and Cell activation – Endocytosis and phagocytosis – Release of cytokines Membranes – composition and function • Membranes are composed of a lipid bilayer (phospholipids, cholesterol, sphingolipids) and proteins. Also carbohydrates linked to both proteins and lipids • Plasma membrane: - – Provides a selective permeable barrier – Transports solutes, – Responds to external signals, Other membranes in cell • Other membranes in cell – ensure compartmentalization – are the locus of biochemical activities – also in energy transduction
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3 Cell Membranes Fluid-mosaic model (Singer and Nicolson) Davison-Danielli model Membranes – cont’d • Membrane proteins can be grouped in three distinct classes: Integral proteins span the membrane (transmembrane proteins). Includes receptors, integrins,
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ZOO4232 - Lecture 1 Cellular Biology - Reading Assignment...

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