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Unformatted text preview: 2. Heterotrophs ( most are saprophytes ) B. Oxygen requirements 1. Molds - aerobic 2. Yeast - aerobic, facultative C. Chemosynthesis ( chemoheterotrophs ) 1. Enzymes catalyze metabolic reactions 2. Energy oxidation CHO ( respiration) YEAST 1. Colony morphology a. Bacteria-like - smooth, rough, shinny, dull, etc. b. Pigmented 2. Microscopic morphology a. Size - larger than bacteria (3 - 15 m) b. Shape - round, oval, cylindrical 3. Yeast cell structure a. Same cell parts as mold cell (see figure in handout) b. Some have capsule...
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- Fall '09