精选优质文档-倾情为你奉上Using the research method of literature, means of observation, behavioral approach, conceptual analysis and the pattern of information-seeking of local and overseas were analyzed and compared, Basic pattern strategies of technology information-seeking高考理综基础知识总结卷第卷(选择题 共120分)(每题仅有一个选项符合题目要求)可能用到的原子量H1 C12 N14 O16 Na23 Cl35.5 Ca40 Fe56 Cu641已知某多肽链的分子量为1.03104,每个氨基酸的平均分子量为120,每个脱氧核基酸的平均分子量为300,那么合成该多肽化合物的基因的分子量约为( )A、12120 B、90900