举一反三
- Which is correct about DNA polymerase and RNA polymerase: A: RNA polymerases use nucleoside diphosphate instead of nucleoside triphosphate for synthesis of polynucleotide chains B: RNA polymerases need primer and add nucleotides in the 5 'end of the polynucleotide chain C: DNA polymerase can add nucleotides in both ends of the polynucleotide chain D: All of the RNA polymerases and DNA polymerases can only add nucleotides in the 3’ end of the polynucleotide chain
- Which<br/>is correct about DNA polymerase and RNA polymerase:() A: RNA<br/>polymerases use nucleoside diphosphate instead of nucleoside<br/>triphosphate for synthesis of polynucleotide chains B: RNA<br/>polymerases need primer and add nucleotides in the 5 'end of the<br/>polynucleotide chain C: DNA<br/>polymerase can add nucleotides in both ends of the polynucleotide<br/>chain D: All<br/>of the RNA polymerases and DNA polymerases can only add nucleotides<br/>in the 3’ end of the polynucleotide chain
- Which of the following descriptions about DNA and RNA polymerase are correct: A: RNA polymerase synthesize RNA chain using nucleoside diphosphate instead of nucleoside triphosphates. B: RNA polymerase can initiate transcription without a primer, and nucleotides are added to 5’ end of the growing RNA chain. C: RNA polymerase can add nucleotides in both 3’ or 5’ end of RNA chain. D: Both RNA polymerase and DNA polymerase can only add nucleotides to 3’ end of the polynucleotides.
- Which of the following RNA polymerase is responsible for the transcription of protein-coding genes in eukaryotes? A: RNA polymerase I B: RNA polymerase II C: RNA polymerase III D: RNA polymerase IV
- Which of the following statements about the σ subunit of RNA polymerase is wrong? () A: It enables the enzyme to transcribe asymmetrically. B: It confers on the core enzyme the ability to initiate transcription at promoters. C: It decreases the affinity of RNA polymerase for regions of DNA that lack promoter sequences. D: It facilitates the termination of transcription by recognizing hairpins in the transcript.
内容
- 0
Eukaryotic RNA polymerase I (Pol I) is responsible for the synthesis of only one type of RNA, a transcript called preribosomal RNA (or pre-rRNA), which contains the precursor for the ___________________ rRNAs. A: 18S B: 5.8S C: 28S D: 38S
- 1
In eukaryotes, the RNA polymerase responsible for mRNA transcription is A: RNA polymerase I B: RNA polymerase II C: RNA polymerase III D: RNA holoenzyme E: RNA core enzyme
- 2
Both eukaryotic RNA polymerase and prokaryotic RNA polymerase can directly recognize and bind to promoter.(<br/>)
- 3
Which is one of the different types of the booth?
- 4
Using the DNA template in a process called _______ RNA is synthesized utilizing which enzyme? A: translation, RNA polymerase B: transcription, DNA polymerase C: transcription, RNA polymerase D: replication, DNA polymerase