Ch 36 Transport in plants

Ch 36 Transport in plants - CHAPTER 36 TRANSPORT IN PLANTS...

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TRANSPORT IN PLANTS CHAPTER 36
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The algal ancestors of plants were completely immersed in water and dissolved minerals. Terrestrial adaptation: - roots: absorb water and minerals from the soil - shoots:exposed to light and atmospheric CO 2 . This morphological solution created a new problem: the need to transport materials between roots and shoots. Vascular tissues transport sap throughout the plant body. Introduction
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Transport in plants occurs on three levels: (1) the uptake and loss of water and solutes by individual cells (2) short-distance transport of substances from cell to cell at the level of tissues or organs (3) long-distance transport of sap within xylem and phloem at the level of the whole plant.
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Cell membrane is selectively permeable. Passive Transport: - Simple Diffusion - Osmosis - Facilitated diffusion (transport proteins) Active Transport: need ATP energy - Chemiosmosis (proton pump) - Charge Gradient - Cotransport  Cell Transport Processes
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Simple Diffusion
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Osmosis Osmosis
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Facilitated Diffusion
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Passive Versus Active Transport Passive Versus Active Transport Passive Versus Active Transport
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Chemiosmosis Chemiosmosis
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Uses the attractive-repulsive properties of ions to move other ions across membranes Charge Gradient
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This note was uploaded on 04/20/2011 for the course BIOL 172 taught by Professor Huddleston,m during the Spring '08 term at University of Hawaii, Manoa.

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Ch 36 Transport in plants - CHAPTER 36 TRANSPORT IN PLANTS...

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