SAS L02 - Insects find shelter under the cap of Hebeloma...

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Insects find shelter under the cap of Hebeloma crustuliniforme
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? A Brief Review Mission-oriented Categories of research Curiosity-driven “Discovery”
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ACQUISITION OF KNOWLEDGE Experimentation Observation Direct indirect Essential elements of the scientific method Observable facts Testable hypothesis Controlled and Replicated Experiment Interpretation of the results Others repeat the work Formulate new hypothesis
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How do we know mushrooms are poisonous to people? Epidemiological evidence Animal surrogate studies “The Case of the Evil Twin”
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How science advances Hypotheses are confirmed or falsified New ones are formed and tested How science advances Hypotheses are confirmed or falsified What is truth? New ones are formed and tested No final truth Science allows us to continuously refine our understanding of the natural world - only levels of confidence
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Other Effects of Fungi on Humans
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TODAY’S ALLERGY FORECAST: INDOOR OUTDOOR CLADOSPORIUM
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Fungal diseases of humans Fungal diseases of humans Dermatophytes TRICHOPHYTON Dermatophyte = Greek for 'skin plants'
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Where do we find products of fungi? Mycology = study of fungi
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Fungus = Latin Fungus = Latin = singular
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Fungi = plural Walking through the woods, I happened across a…………… Fungus Fungi By the end of the day, I had seen many: Fungi 100,000 known species Total: 1.5 million
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- 100,000 known species - this is likely 5% of total fungi (probably 1.5 million+ species) where are they? tropics soil parasites mutualists cryptic spp. your backyard Your desktop Your shoes Your toes? The living world Animal Kingdom Plant Kingdom ?
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Animal Plant Motility? YES NO
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CO 2 H 2 O Sugar + O 2 Autotrophic PHOTOSYNTHESIS Fungi are not photosynthetic Not autotrophic
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Fungi are heterotrophic Require organic nutrients Sugars Amino acids Animals are heterotrophic [ hetero- + Greek trophos, feeder ; Fungi are food absorbers Digest food outside their bodies Animals ingest food first
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f Closest relative?
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f Compare DNA sequences of conserved genes Plants Animals Fungi Based on DNA sequence comparisons
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SAS L02 - Insects find shelter under the cap of Hebeloma...

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