【简答题】(2018· 福建省名校适应性考试 ) 油菜种子成熟过程中部分有机物的变化如图 1 所示。将储藏的油菜种子置于温度、水分 ( 蒸馏水 ) 、通气等条件适宜的黑暗环境中培养,定期检测萌发种子 ( 含 幼苗 ) 中脂肪含量和干重,其中干重的变化如图 2 所示。请据图回答下列问题: (1) 取图 1 中 35 天时的种子处理,获取提取液均分为三份 ( 甲、乙、丙 ) ,甲中加入斐林试剂并水浴加热,乙中加...
【判断题】不同的分析方法选择不同级别的蒸馏水可以节省开支。
【简答题】人类发现了放射性同位素以后,很快便将它应用在生物学的研究中,为探明许多生命过程的奥秘起了很重要的作用。请回答: (1)如果用含 18 O的水浇灌某盆栽植物,并将该盆栽植物置于光照下。过一段时间,在植物周围的空气中,含 18 O的气态物质有______________。这些物质是由____________等(生理过程)产生的。 (2)如果用含 15 N的蛋白质饲料饲养体内不含 15 N的大白鼠,在饲...
【简答题】What percent of the total do potato chips and tortilla chips comprise?
【简答题】(2019•福建省名校适应性考试)油菜种子成熟过程中部分有机物的变化如图1所示。将储藏的油菜种子置于温度、水分(蒸馏水)、通气等条件适宜的黑暗环境中培养,定期检测萌发种子(含幼苗)中脂肪含量和干重,其中干重的变化如图2所示。请据图回答下列问题:(点击图片可看到完整的图) (1) 取图 1 中第 35 天时的种子处理,将获取的提取液均分为三份 ( 甲、乙、丙 ) ,甲中加入斐林试剂并水浴加热,乙中加...
【单选题】You observe that an increase in the price of salsa decreases the demand for tortilla chips and increases the demand for potato chips. You can conclude that (您观察到,莎莎的价格上涨会降低玉米饼的需求,并增加对薯片的需求。你可以得出结论——中...
A.
salsa and tortilla chips are substitutes.莎莎和玉米饼是替代品。
B.
salsa and potato chips are complements.莎莎和薯片是补充。
C.
tortilla chips and potato chips are complements.玉米片和薯片是补充。
D.
salsa and tortilla chips are complements.莎莎和玉米饼芯片是补充。
【判断题】Tortilla chips are diamond shaped wedges cut from corn or flour tortillas, then fried or sometimes baked.
【单选题】A tortilla chip manufacturer claims that, on average, they put 16.1 ounces of chips in each bag they produce. However, due to variations in chip size, the standard deviation of the weight of chips in...
A.
It is virtually impossible to get this result if the manufacturer is telling the truth.
B.
We cannot tell if the manufacturer is telling the truth since the sample size is only 40.
C.
The manufacturer may be telling the truth. The probability of a sample mean of 15.9 or less is 0.095.
D.
The manufacturer may be telling the truth. The probability of a sample mean of 15.9 or less is 0.284.
【简答题】[A] flakes [B] flocks [C] chips [D] cakes