第十五章单元测试
- MRNAs function as carriers of the genetic information from the DNA in the nucleus to the cytoplasm where it can be translated into protein.（ ）
- TRNAs are adaptor molecules that deliver the correct amino acids to the ribosome corresponding to the trinucleotide codon encoded by the mRNA.（ ）
- RRNAs form structural and catalytic components of the ribosome.（ ）
- RNA polymerase is a multi-subunit enzyme that possesses 3’ to 5’ exonuclease activity. （ ）
- In the regulation of transcription in eukaryotes, protein factors (transcription factors) with activation and/or inhibition activities have been identified. Binding sites for these factors are required to be directly proximal to the promotor. （ ）
A:对 B:错
答案:对
A:错 B:对
A:错 B:对
A:错 B:对
A:对 B:错
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