题目内容

Which one of the following structures does bacterial cells terminate transcription by recognizing?()

A. Terminator
B. Hairpin structure
C. Termination codon
D. SD sequence
E. Dissociation of σ subunit of RNA polymerase

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In vertebrate genes, which CpG modified transcriptional regulatory sites containing CpG islands will be inactivated?()

A. Methylation
B. Alkylation
C. Phosphorylation
D. Acetylation
E. Ubiquitination

The following are not nucleosome core granule proteins()

A. H1
B. H2A
C. H2B
D. H3
E. H4

The synthesis of messenger RNA encoding eukaryotic ribosomal protein occurs in()

A. cytoplasm
B. Nuclear membrane
C. nucleolus
D. euchromatin
E. heterochromatin

How do amino acids recognize specific codons?()

A. Hydrogen bonding between amino acids and codons
B. It depends on the hydrogen bond between amino acids and the anticodon on tRNA
C. Ribosomes can exclude amino acids that are not correctly matched
D. The specific recognition between Amino acid which is dependent on aminoacyl tRNA synthetase with tRNA specific recognition
E. Transcription initiation factor recognizes - 10 and - 35 sites

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