Which of the following is not the difference between DNA polymerase and RNA polymerase?()
A. The fidelity of the two enzymes is different when the template chain is copied
B. The number of reaction starting sites is different
C. Different reading directions of template chain
D. Size of reaction products
E. The reaction process is bidirectional
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What will be caused by swing pairing during translation?()
A. There are less than 61 kinds of tRNA
B. Produce code shifting mutation, destroy the synthesis of protein
C. Many different amino acids may be synthesized at a specific location of the protein
D. tRNA can be released at the E site of ribosome
E. Sometimes the P site of tRNA can be inserted into ribosome
How can a eukaryotic transcription product express more than one protein?()
A. No, only prokaryotes can do that
B. It can contain more than one ribosome binding site
C. It can contain operons with multiple structural genes
D. Its translation can be coupled with the transcription process
E. Different exons can be spliced during transcription splicing
Which of the following is done by splicing?()
A. Removal of introns from eukaryotic RNA
B. Removal of exons from prokaryote RNA
C. Removing introns from eukaryotic DNA
D. Removal of exons from eukaryotic RNA
E. Removing introns from prokaryote DNA
What is the role of inducers in the positive regulatory system?()
A. It's called "co-inhibitor"
B. Prevent binding DNA of repressor protein
C. DNA that helps activate protein binding
D. Instead of protein, it binds directly to the DNA
E. Impossible, inducers are only used for negative regulatory mechanisms
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