fungi - 1). Cell wall a). Rigid, porous b). Composed of...

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MORPHOLOGY OF FUNGI A. FILAMENTOUS MOLDS 1. Colony morphology a. Fuzzy, cottony, pigmented - colors distinctive b. Varies in size, shape, texture - characteristic for each genus 2. Structure of mold colony (see handout) a. Mat of intertwining branching filaments b. Filament - chain of single cells joined to end c. Hypha - individual filament (hyphae - plural) d. Mycelium - mass of filaments visible to unaided eye e. Two types mycelium based on function: 1). Aerial (reproductive) mycelium - grow upward - reproduction (spores) 2). Vegetative mycelium - penetrate medium - absorption of nutrients 3. Microscopic morphology (see handout) a. Hypha - microscopic filament 1). Formed of chain of individual cells 2). Septate hypha - divided by cross walls separating individual cells 3). Nonseptate (Coenocytic) hypha - no cross walls, resembles hollow tube 4). Hyphae may appear branched, spiral, nodular, etc. - characteristic for genus fungus b. Fungal cell structure : (see figure in handout)
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Unformatted text preview: 1). Cell wall a). Rigid, porous b). Composed of chitin c). Responsible for shape of cell Protection 2). Cell membrane a). Semipermeable membrane b). Composed of bilayer of phospholipids c). Controls absorption of nutrients, elimination of wastes 3). Cytoplasm a). Filling of cell b). Suspension medium c). 80% H 2 O + 20% soluble substances 4). Nucleus a). Nuclear membrane b). DNA - chromosomes c). Nucleolus - site of r-RNA synthesis d). Controls metabolism, reproduction 5). Mitochondria a). Outer membrane; inner folded membrane b). Site of ATP synthesis 6). Endoplasmic reticulum a). Membranes that lie parallel to each other forming channels b). Ribosomes attached to surface - sites of protein synthesis 7). Vacuoles - food, storage, digestion 8). Inclusion (Nutrient, Storage) granules - stored nutrients 9). Septum cross wall between individual cells 10).Pore opening in septum; allows cytoplasmic streaming...
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fungi - 1). Cell wall a). Rigid, porous b). Composed of...

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