Assignment 12 Biochem

1. How DNA photolyases and alkyl transferases repair the DNA damage?

2. Explain the process of base excision repair with emphasis on DNA glycosylases and uracil-DNA glycosylase?

3. Describe the nucleotide excision repair and mismatch repair mechanism?

4. What are the different types of RNA and state their functions? Explain the RNA polymerase role in prokaryotic RNA transcription?

5. How is RNA transcription initiated through promotor and terminates at specific sites in prokaryotes?