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Affect of sucrose concentration on the rate of respiration.
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Biology coursework Investigation- Affect of sucrose concentration on the rate of respiration. Planning Aim and Background information The aim of this investigation is to find out how the affect of changing the sucrose concentration affects the rate of respiration of yeast. The reaction can be measured by the amount of carbon dioxide given of by yeast and ethanol is also produced as a result of the reaction. Yeast (Saccharomyces cerevisiae) is a unicellular fungus, which is frequently used in baking. The precise classification is a field that uses the characteristics of the cell, ascospore and colony. Physiological characteristics are also used to identify species. One of the better-known characteristics is the ability to ferment sugars for the production of ethanol. Budding yeasts are true fungi of the phylum Ascomycetes, class Hemiascomycetes. The true yeasts are separated into one main order Saccharomycetales. Yeasts multiply as single cells that divide by budding (eg Saccharomyces) or direct division...
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