皮皮学，免费搜题
登录
搜题
【单选题】
在搭建 DNA分子模型的实验中,若有4种碱基塑料片共20个,其中4个C,6个G,3个A,7个T,脱氧核糖和磷酸之间的连接物14个,脱氧核糖塑料片40个,磷酸塑料片100个,代表氢键的连接物若干,脱氧核糖和碱基之间的连接物若干,则( )A.
能搭建出 20个脱氧核苷酸
B.
所搭建的 DNA分子片段最长为7碱基对
C.
能搭建出 410种不同的DNA分子模型
D.
能搭建出一个 4碱基对的DNA分子片段
手机使用
分享
复制链接
新浪微博
分享QQ
微信扫一扫
反馈参考答案：
举一反三
【单选题】There are children ______ and a big house _______. A. to look after...to take care B. to look...to take care of C. to look after...to take care of D. look after...take care of
A.
to look after…to take care
B.
to look…to take care of
C.
to look after…to take care of
D.
look after…take care of
【简答题】The word “benevolent” (Line 3, Para. 3) means __________. A) relevant B) kind C) serious D) effective
【单选题】I treat the dog as my pet. It’s easy . [ ]
A.
take care of
B.
take care of it
C.
to take care of it
D.
to take care of
【单选题】With respect to program variables,（73)means assigning a beginning value to a variabl
A.
B.
Setup
C.
startup
D.
initialization
E.
pre-compile
【单选题】The standard of living of any country means the average person's share of the goods and services which the country produces. A country's standard of living, therefore, depends on its 【C1】______ to pro...
A.
potential
B.
faculty
C.
capability
D.
capacity
相关题目：
参考解析：
知识点：
题目纠错 0
发布
