in the experiment of alcoholic fermentation, we place 5%glucose solution and living yeast together covered with a oil layer for two days.
how would the rate of release of bubble be affected if a 20% glucose solution were used instead of the 5% glucose solution?
the answer suggested that the rate was zero throughtout the time.
why? give explanations please.!!~
我想問關於yeast and glucose
2007-06-16 7:16 pm
回答 (2)
2007-06-17 8:20 pm
✔ 最佳答案
1.As the water potential of 20% glucose solution is lower than the yeast, water moves out from the yeast cells.2.therefore, the yeast cells become flaccid and plasmolysed. Finally, the yeasts die of dehydration.
3 the rate was zero because there is no yeast to carry out anaerobic respiration to produce carbon dioxide.
參考: myself
2007-06-16 7:43 pm
Yeasts are plasmolyzed （胞漿收縮）under 20% glucose solution -> dead -> ∴rate=0
參考: 個人生物科知識
收錄日期: 2021-04-23 17:06:13
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https://hk.answers.yahoo.com/question/index?qid=20070616000051KK01234