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Alkane: CnH2n+2
Alkene: CnH2n
Alcohol: CnH2n+1OH
Carboxylic acid: CnH2n+1COOH
At 37 deg C, the enzymes in yeast are the most active, so fermentation process will be fastest.
At low temperatures, the enzymes in yeast are inactive, so fermentation will be slow.
At high temperatures, the enzymes in yeast will be denatured, so fermentation will stop.