Assume that you have a culture of bacterial rods with dimens

来源：学生作业帮编辑：神马作文网作业帮分类：英语作业时间：2024/11/12 05:49:45

Assume that you have a culture of bacterial rods with dimensions 0.4 μm diameter by 1.2 μm length.The cells are 80 percent water,and 90 percent of dry weight is organic.Compute the volume and the organic mass of one cell.How many cells are present in one liter of culture if the organic dry weight (also called volatile suspended solids) is 100 mg/l?
书上原题就是如此。
如何计算？我问的不是如何翻译！

题目中已经说了,细菌直径0.4微米,长1.2微米,杆状,因此可以容易用圆柱体公式算出体积是3.14×0.04×1.2≈0.15立方微米.然后题目告诉了,细胞中80%是水,然后18%是有机物,2%是其他物质,这里有一个近似,就是含有这么多水的细胞其密度基本与水相似.因此,一个细胞的有机物重量应该是0.15×18%=0.027=27纳克.然后要达到100mg/L的干重,则需要3.7×10^6个细胞/升

I have a lot of hope,finish that with you Let us assume that you have been appointed to a change agent 英语翻译Assume that someone brings you a signal processing syste 1.With（）knowledge of a country's customs and culture,you can Of all being that you have a better life with each other tha I have to assume that you have on interest in workig in Fifi 翻译:I would assume that you as the manufacturer would have th Consider a model with only one time period.Assume that there 英语翻译A characteristic of American culture that has become alm 英语翻译Instill a culture of risk consciousness that respects an A characteristic of American culture that has become almost If you have a problem with that.Then its okay