L____ in the northeast of China, the Changbai Mountain is named after its iconic scenery of being perpertually white almost all year long.
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We became acutely c_____ of having failed in the robot competition.
The new robot model will be l_____ next month.
有关 mRNA的论述不正确的是
A. mRNA分子中含有生物遗传信息
B. 真核生物mRNA 5' 末端有相似的结构
C. 真核生物mRNA 3'末端有相似的结构
D. mRNA 的碱基序列可以指导多肽链的合成
E. mRNA的所有碱基都有编码氨基酸的作用
mRNA的特点有
A. 分子大小不均一
B. 有3'-多聚腺苷酸尾
C. 有编码区
D. 有5'-C-C-A结构
E. 有三叶草结构
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