BIOL 2051 Lecture Notes - Lecture 20: Pneumocystis Jirovecii, Brown Algae, Stachybotrys
Document Summary
Groups containing microscopic eukaryotes: fungi, algae, protozoa. Most grow hyphae: mycelium- branched mass of hyphae. Absorptive heterotrophs- secrete enzymes outside their cells into their environments; they don"t engulf their food; they digest it outside; then absorb it. Fungi- yeasts: unicellular fungi- no mycelia stages, reproduce via budding. Fungi- chytrids: motile (flagella) reproductive zoospores, associations with animals. Frog pathogen- release zoospores to find another frog to infect. Fuse to form zygote called zygospores: rhizopus- bread mold (most common, arbuscular mycorrhizae. Increase root absorption: fruiting bodies form asci, neurospora-bread mold, penicillium- first antibiotic, aspergillis, candida, pneumocystis carinii, saccharomyces, molds- cladosporium, stachybotrys, morels and truffles. Fungi- basidiomycetes: produces spores called basidiospores, true mushrooms, cryptoccoccus. 1: all have chloroplasts, many have paired flagella, cell wall made of glycoprotein or cellulose, contractile vacuole removes excess water, stores energy as starch instead of fat. Chlorophyll a: grow near top of water, multiple life forms, unicellular forms have flagella.
