3.27.2008 - Fungi

3.27.2008 - Fungi - Fungi Int roduction • High points –...

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Unformatted text preview: Fungi Int roduction • High points – beer, other fermented beverages, elaven bread • Low points – athletes foot, jock itch, that pink stuff that grows on your shower curtain Shared Characteristics • Distinctive fungal features o Fungi are heterotrophs. o Fungi have several cell types. o Some fungi have a dikaryon stage. Two haploid cells coexisting in a single cell (dikaryon) before fusion to form nucleus (diploid) o Fungi have cell walls that include chitin. o Fungi undergo nuclear mitosis In mitosis, nuclear membrane does not breakdown, mitosis occurs in the nucleus The Body of a Fungus • Fungi exists mainly in the form of slender filaments ( hyphae) . o Long chains of cells joined end-to-end divided by cross-walls ( Septa) Rarely form complete barrier Cytoplasm freely streams in hyphae o Mycelium – mass of connected hyphae Grows through and penetrates substrate • Fungi cell walls are formed of polysaccharides and chitin....
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3.27.2008 - Fungi - Fungi Int roduction • High points –...

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