The cap structure of mRNA in eukaryotic cells is.()
A. 7- methyl guanine nucleoside triphosphate
B. 7- methyl uracil nucleoside triphosphate
C. 7- methyl adenine nucleoside triphosphate
D. 7- methyl cytosine nucleoside triphosphate
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The post-transcriptional processing of mRNA in eukaryotic cells does not include:()
A. The CCA-OH is added on it
B. The cap structure is added on the 5’ terminal
C. The poly(A) tail is added on the 3’ terminal
D. The splicing of introns
Part of introns in eukaryotic cells have branch points, and around these points are some conservative sequences binding with the U2 splicesome.()
The tRNA and rRNA moleclues of eukaryotic cells also need to be spliced.()
Which of the following description is correct about type I self splicing intron?()
A. The free guanine activate the transesterification and then covalently bound at 5' terminus of the intron
B. The intron can form the lariat
C. It’s a common splicing way of mammals’ mRNA
D. There’s no adenine in sequences of introns
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