BIOL 209 Lecture Notes - Lecture 2: Protoplasm, Mycelium, Chitin

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25 Sep 2018

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Biology 209

Lecture #2

• Mycelium: whole body of the fungus

• Hypha- one of each individual strands

• A mycelium, an individual fungus made of hyphae

• Yeast: unicellular fungi

• Hyphae: Grow at their tips

• Ringworm is a fungal infection of skin

• Thallus: All of us

• Amoebae: Wall-less, unicellular microscopic protists

• Fungal cell walls and septa are made of chitin and beta-glucans. Cytoplasm

secretes non-living wall.

• Fungal cell walls are not alive. Septa cross walls may not be present

• Take an amoeba, wrap in chitinous cell wall, and you have a fungus.

• Membranes with fluorescent stain in living hypha, hyphae grow at their tips

• Within the cell wall, fungal protoplasm migrates into tips

• Protoplasm migrates through pores in septa

• Bottles of fungi:

• Hypha (singular) hyphae (plural)

• Individual fungal filament

• Can be a cell or a row of cells

• Mycelium (singlular) mycelia (plural)- whole body of the fungus individual fungus

made of hyphae

• Yeast: unicellular fungi; they are microscopic and often in moist environments

• Which fungus body type makes EtOH and flavour of beer: yeast

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