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Questions and Answers
What is a key step in the post-transcriptional modification of messenger RNA in eukaryotes?
What is a key step in the post-transcriptional modification of messenger RNA in eukaryotes?
- The addition of a 5' cap (correct)
- Rho-dependent termination:
- formation of many hairpin loops to form a clover leaf structure
- Termination of the anticodon
Which of the following are typically not found in eukaryotes?
Which of the following are typically not found in eukaryotes?
- Spliceosomes
- Promoters
- Polycistronic mRNAs (correct)
- Polyadenylation of the 3' end
When glucose is present at high levels, what happens to the rate of transcription of structural genes in the lac operon?
When glucose is present at high levels, what happens to the rate of transcription of structural genes in the lac operon?
- It decreases because glucose inhibits the production of cAMP (correct)
- It increases because glucose binds to a repressor
- It remains the same
- It decreases because glucose unwinds the chromatin structure of DNA
What is a consequence of 'wobble' in the process of translation?
What is a consequence of 'wobble' in the process of translation?
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During the elongation phase of translation, transfer RNAs will move from which sites on the ribosome?
During the elongation phase of translation, transfer RNAs will move from which sites on the ribosome?
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When Molecule B is present, what happens to the transcription of Gene A?
When Molecule B is present, what happens to the transcription of Gene A?
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