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> 酵母菌被广泛用于发酵,为研究酒精发酵的产物,某研究小组设计了如下图所示的装置图。1号、2号试管中均加入3mL蒸馏水和少许0.1%BTB溶液至蓝绿色(若为较强酸性时,BTB溶液呈-高一生物
酵母菌被广泛用于发酵,为研究酒精发酵的产物,某研究小组设计了如下图所示的装置图。1号、2号试管中均加入3mL蒸馏水和少许0.1%BTB溶液至蓝绿色(若为较强酸性时,BTB溶液呈-高一生物
题目简介
酵母菌被广泛用于发酵,为研究酒精发酵的产物,某研究小组设计了如下图所示的装置图。1号、2号试管中均加入3mL蒸馏水和少许0.1%BTB溶液至蓝绿色(若为较强酸性时,BTB溶液呈-高一生物
题目详情
酵母菌被广泛用于发酵,为研究酒精发酵的产物,某研究小组设计了如下图所示的装置图。1号、2号试管中均加入3mL蒸馏水和少许0.1%BTB溶液至蓝绿色(若为较强酸性时,BTB溶液呈黄色)。下列有关评价合理的是
[ ]
A.1号试管可以去除或将1号试管中BTB溶液换成澄清石灰水
B.该装置无法检验CO
2
的生成,仍需再补充其他装置
C.温度偏高,导致发酵管内O
2
少,酵母菌繁殖速度减慢,不利于发酵
D.为使发酵管中尽量少的含有O
2
,应先将葡萄糖液煮沸,待冷却后加入鲜酵母,再加入少许石蜡油,使之浮于混合液表面
题型:单选题
难度:中档
来源:同步题
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题目简介
酵母菌被广泛用于发酵,为研究酒精发酵的产物,某研究小组设计了如下图所示的装置图。1号、2号试管中均加入3mL蒸馏水和少许0.1%BTB溶液至蓝绿色(若为较强酸性时,BTB溶液呈-高一生物
题目详情
B.该装置无法检验CO2的生成,仍需再补充其他装置
C.温度偏高,导致发酵管内O2少,酵母菌繁殖速度减慢,不利于发酵
D.为使发酵管中尽量少的含有O2,应先将葡萄糖液煮沸,待冷却后加入鲜酵母,再加入少许石蜡油,使之浮于混合液表面
答案