Which of the following best describes an event during step 2 in the simplified model above?单项选择题

题目图片
A

A new polypeptide is synthesized using an RNA template.

B

A new RNA molecule is synthesized using a DNA template.

C

Thymine nucleotides in an RNA molecule are replaced with uracil nucleotides.

D

Noncoding sequences are removed from a newly synthesized RNA molecule.

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类似问题

Molecular biologists are studying the processes of transcription and translation and have found that they are very similar in prokaryotes and eukaryotes, as summarized in Table 1. Table 1. Comparison of Selected Features of Transcription and Translation Feature of Protein Synthesis Prokaryotes Eukaryotes Transcription RNA Polymerase Present Present mRNA Synthesized Synthesized Location Cytoplasm Nucleus Translation Large Ribosomal Subunit 50S 60S Small Ribosomal Subunit 30S 40S tRNA Present Present Location Cytoplasm Cytoplasm Based on the information in Table 1, which of the following best predicts a key difference in prokaryotes and eukaryotes with regard to transcription and translation?

Which of these is NOT an important role of post-transcriptional mRNA modifications?

Select all of the following that are features of a mature eukaryotic mRNA molecule.

Which of the following events is not an example of an mRNA modification that occurs in eukaryotes?

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