BIOL 2303 Lecture Notes - Lecture 10: Saccharomyces Cerevisiae, Saccharomycetes, Saccharomycetales
27 May 2020
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Document Summary
A spectrophotometer is used to determine turbidity (optical density ) by measuring the amount of light that passes through a suspension of cells. Plotting optical density vs cfu/ml yields a roughly linear relationship and once established, can be used to estimate the concentration of a bacterial cell suspension prior to performing a plate count. Kingdom: fungi, domain: eukaryota (membrane bound nuclei) Also goes my many diff names such as brewer"s yeast, They express haploid (mitosis)and diploid forms (sexual reproduction, meiosis and forms haploid spores with mate and form diploid again) Yeast has 2 mating types, alpha (primitive aspect of sex differentiation), and a. Nutrition: all strains grow anaerobically on glucose, maltose, and trehalose. Fail to grow on lactose and cellobiose. Warm, moist environment (isolated from sugar rich material) Was first eukaryotic genome that was completely sequenced. Genome size: 12, 156, 677 base pairs.
