在盛有300ml5%的葡萄糖溶液的锥形瓶中加入10g新鲜的酵母菌进行酒精

在盛有300ml5%的葡萄糖溶液的锥形瓶中加入10g新鲜的酵母菌进行酒精发酵。将整个装置(如下图甲)置于25℃环境中,采用排水集气法测定产生的CO2,结果如下图乙中曲线Ⅰ所示。利用同样的实验装置,改变某条件后,结果如图乙中曲线Ⅱ所示。则改变的条件最可能是  (    )

 

 

 

 

 

    A.增加酵母菌的数量               B.换用3%的葡萄糖溶液

    C.将温度升高到50℃               D.换用较小容积的锥形瓶

 

答案

B

相关题目

相同温度下,体积均为0.25 L的两个恒容密闭容器中发生可逆
相同温度下,体积均为0.25 L的两个恒容密闭容器中发生可逆反应: N2(g)+3H2(g)2NH3(g) ΔH=-92.6 kJ·mol-1。 实验测得起始、平衡时的有关数据如下表所示
阅读下列材料: 材料一 是以其(君主)未得之(天下)也,荼毒
阅读下列材料: 材料一 是以其(君主)未得之(天下)也,荼毒天下之肝脑,离散天下之子女,以博我一人之产业,曾不惨然,曰:我固为子孙创业也。其
1. Mrs. Green doesn’t want ___ (this) socks. 2. Helen ___ (want) to go to sch
1. Mrs. Green doesn’t want ___ (this) socks. 2. Helen ___ (want) to go to school on foot. 3. My sister ___ (not) know what it is. 4. ___ (that) books are in English.   1. these 2. wants 3. does
能证明苯酚具有弱酸性的实验是(    ) A.加入浓溴水生成
能证明苯酚具有弱酸性的实验是(    ) A.加入浓溴水生成白色沉淀 B.苯酚钠溶液中通入CO2后,溶液由澄清变浑浊 C.浑浊的苯酚加热后变澄清 D.苯酚的
With the worldwide oil crisis, the price of oil has been raised ______ 15%.  
With the worldwide oil crisis, the price of oil has been raised ______ 15%.       A. about B. with C. of D. by
下列函数,既是奇函数,又在区间(0,+∞)上是减函数的是(
下列函数,既是奇函数,又在区间(0,+∞)上是减函数的是( ) A.f(x)=-x2                  B.f(x)= C.f(x)=                      
 Left ____ in the reading room alone quite by accident, the boy felt nervous.
 Left ____ in the reading room alone quite by accident, the boy felt nervous. A. locking     B. having locked    C. to lock     D. locked
Now that you have accepted the task, the only thing you can do now is ______ on
Now that you have accepted the task, the only thing you can do now is ______ on how to fulfill it. A. reflect                      B. try                     

最新题目