DNA REPAIR – POSTRANSLATIONAL MODIFICATION QUIZ#7

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Question 1 of 12

1. Which of the following DNA repair mechanisms is most likely to be defective in a patient with xeroderma pigmentosum?

Question 1 of 12

Question 2 of 12

2. Which type of DNA mutation is least likely to affect protein function?

Question 2 of 12

Question 3 of 12

3. In the absence of glucose and the presence of lactose, the lac operon is:

Question 3 of 12

Question 4 of 12

4. Which RNA polymerase is responsible for the synthesis of mRNA in eukaryotic cells?

Question 4 of 12

Question 5 of 12

5. During protein synthesis, the accuracy of amino acid selection is checked at which of the following sites of the ribosome?

Question 5 of 12

Question 6 of 12

6. Which element in the eukaryotic gene is responsible for RNA polymerase II binding and the initiation of transcription?

Question 6 of 12

Question 7 of 12

7. In eukaryotic cells, gene expression can be regulated by modification of histones. Which of the following histone modifications is generally associated with transcriptional activation?

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Question 8 of 12

8. Which of the following processes occurs to pre-mRNA in the nucleus before it is transported to the cytoplasm?

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Question 9 of 12

9. What is the role of a spliceosome in mRNA processing?

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Question 10 of 12

10. During mRNA processing, exons and introns are differentiated by which mechanism?

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Question 11 of 12

11. What is the function of tRNA in protein synthesis?

Question 11 of 12

Question 12 of 12

12. Which of the following posttranslational modifications directs a protein to lysosomes?

Question 12 of 12


 

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