There are two separate strains of bacteria growing in the la

2个回答

  • 有两种在实验室中生长的细菌品种.菌种A初始是35mg并且每6小时质量增加4倍,菌种BA初始是85mg并且每4小时质量增加3倍.

    a.)每个培养皿(中的细菌)的增长速度是什么?

    b.)什么时候两个培养皿中的细菌有相同的质量?

    answer:

    a.) the growth rate of strain A is 35*(4-1)/6 = 17.5 (mg/h)

    the growth rate of strain B is 85*(3-1)/4 = 42.5 (mg/h)

    b.) We suppose the time is t hour,then:

    35 + t * 17.5 = 85 + t * 42.5

    => t < 0 ,so I think the data is wrong.

    答案:

    a.) A的增长速度是 35*(4-1)/6 = 17.5 (毫克/小时)

    A的增长速度是 85*(3-1)/4 = 42.5 (毫克/小时)

    b.) 假设时间为t小时后两者质量相等,则:

    35 + t * 17.5 = 85 + t * 42.5

    => t < 0 ,所以我认为数据是有错误的.