Questions and Answers for Transcription and Translation

Questions and Answers for Transcription and Translation -...

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Questions and Answers for Transcription and Translation 1. Where is the “code” for a polypeptide located? 2. Where are polypeptides synthesized? 3. Since the code is associated with the DNA in the nucleus, and ribosomes are located in the cytoplasm of the cell, how is the code from the DNA carried to the ribosome? 4. What are the two primary steps of polypeptide synthesis from DNA called and where does each occur? 5. What are the three types of RNA that are involved in transcription and translation and what does each do? 6. When a new mRNA is made from DNA, are the bases in the mRNA the same as the DNA or complimentary? 7. What is the genetic code made up from? DNA or RNA? 8. What is a codon? How many codons total exist in the genetic code? 9. Why are there so many codons for only 20 amino acids? 10. What is the start codon for all polypeptides? What amino acid is associated with this codon? 11. What do we mean when we say the genetic code is redundant? Has “wobble” in it? 12. What is a reading frame? Why are they important when we are dealing with synthesizing polypeptides? 13. What are the three major steps to transcription? 14. What is a Promoter and what is it important for? What is the TATA box and what is it’s role in transcription? 15. What are transcription factors made of and what is their role in transcription? 16. What is the final step in the initiation of transcription? What molecule is involved? 17. Elongation in transcription is very similar to that of DNA replication. What enzyme is involved in transcription and what does it do during this stage of transcription? 18. Termination of transcription occurs when the RNA polymerase reaches what structure on the DNA strand? 19. What is the next process that occurs after transcription? What is the primary event that occurs in this next step? 20. What is a tRNA again? What is unique about it with respect to translation? 21. What is the relationship between the codon on the mRNA and the anticodon on the tRNA? 22. Why is this anticodon on the tRNA so important? 23. How many subunits are there to a typical ribosome? What are they called? 24. How many catalytic sites are there in a typical ribosome?
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This note was uploaded on 04/07/2008 for the course BIO Genbio taught by Professor Ferguson during the Fall '07 term at University of Colorado Denver.

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Questions and Answers for Transcription and Translation -...

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