Bio Lecture 17: Fungi
Bio Lecture 17: Fungi BIO 209L-001
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This 2 page Class Notes was uploaded by Kiara Reyes on Wednesday October 7, 2015. The Class Notes belongs to BIO 209L-001 at Northern Illinois University taught by Dr. Renee Kopulos in Summer 2015. Since its upload, it has received 36 views. For similar materials see Human Anatomy and Physiology I Lab - SL in Biological Sciences at Northern Illinois University.
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Date Created: 10/07/15
1 Lecture 17 Fungi Who Fungi include Mushrooms Mold Mildew on wall YeastUnicellular form or species Ex baker s bread brewer s yeast beer 2 Forms and Feeding Closer to animals then plants trace back to common ancestors Cell wall of different substance then algae and plants Chitin outer covering tough protective covering or structural support in certain organism Hyphae Long thin branching laments 1 or 2 cell thick string like roots deep into the soil Absorbing nutrients hyphae form a mycelium that grows into whatever material the fungus is feeding on Mycelium plural mycelia has an extremely large surface area lots of area to absorb nutrients underground or in the materials the fungus feed on Side Note Animals consume and digest inside while Fungi digest on the outside of their body then absorb the nutrients Feeding in Fungi Heterotrophs Can t produce their own food like photosynthetic plants and protists Get food from other organic organism Digest and absorb of living or dead organisms Or decompose wood and organic material in soil making nutrients available for plants roduction At different points in Reproduction cycle fungi are Haploid 1ngt Most of the times or Diploid 2ngt Brie y In sexual reproduction nuclei don t fuse right away 1n 2n Their next to each other but don t mix together yet 0 Sexual Reproduction in Fungi Hyphae from 2 different individual meet up Hyphae join and grow together Nuclei from both individual present 1n2n 4 Important Fungi Mycosts Infection caused by a parasitic fungus EX Athletes Foot like a parasite Ringworm Caused by infected fungi Hyphae grow in outer layer of skin feeding on keratin brous protein Athletes foot fungus grows best when incubated in a warm humid place like shoes 0 Some fungi produce antibiotic chemicals EX Penicillium disrupts synthesis of bacterial cell wall First effective produced anitbiotics Other species of Penicillium used for avor and inhibit bad microorganism 0 Chytrid Fungus Phylum one species has produced a worldwide decline in amphibians Some fungi live symbiotically living within another organismplant Mycorrhizal Fungi Hyphoe colonize plant roots grow within plant roots gt Fungus provides nutrients to the plant gt Plant provides carbon from photosynthesis to the fungus gt Most Plants grow better with Mycorrhizae Don t Confuse Mycorrhizal Fungi Rhizobuim Fungi Bacteria Transfer nutrients from soil Turns N2 gas into nitrogen plants use Presents in most plants Presents in some plants legumes aroundbreaking rough cell wall But not Most Lichens Symbiosis between A fungus and a photosynthetic microorganisms Green Algae or Cyanobacteria
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