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Eukaryotic Cell Structure and Function Presentation

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Slide 1 Eukaryotic Cell Structure and Function Chapter 4 Slide 2 Eukaryotic Microorganisms • Prominent members of ecosystems • Useful as model systems (e.g., yeast) and have industrial applications • Some are major human pathogens • Two common groups of eukaryotic microorganisms • Protists • Fungi Slide 3 Red Means Dead • Millions of acres of trees have been killed in western U.S. and British Columbia • Caused by: 1. Mountain pine beetle (bark beetle) 2. Blue stain fungus Grosmannia clavigera • Mutualistic relationship – both parties benefit British Columbia from each other • Beetle transports fungus from one tree to another • Fungus protects beetle from tree’s defense mechanisms Rocky Mountain Forest Slide 4 Symbiotic relationship exists between beetle and fungus • Beetle chews through bark of pine tree • Tree produces a resin that is toxic to beetle • Fungus degrades toxin • Serves as energy source to fungus • Beetle survives and continues to attack trees • Beetles lay eggs and multiply • Fungus is also a food source to beetle • Tree eventually dies USDA Forest Service Bark Beetle Slide 5 Effects of Mountain Pine Beetle Aerial photo of a British Columbia Forest Increased loss of pines due to beetle infestations Phys.org Scientific American, January 2011 Slide 6 CRITICAL THINKING QUESTION: What is a potential downstream effect of the mountain pine beetle infestation leading to the death of so many pine tree ...
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Tags: eukaryotic cell Eukaryotic Cell Structure Eukaryotic Cell Function eukaryotic microorganisms Common Features of Eukaryotic Cells

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