Helicase
Ans- Catalyzes ATP-dependent unwinding of DNA double helices
What is the helicase in E. Coli?
Ans- DNAB
Single-Stranded Binding Protein
Ans- Binds to unwound strands of DNA to prevent reannealing
DNA Polymerase
Ans- Enzyme responsible for DNA replication
Uses ssDNA as a template an...
Biochemistry ACS Exam Questions and Answers Helicase Ans- Catalyzes ATP -dependent unwinding of DNA double helices What is the helicase in E. Coli? Ans- DNAB Single -Stranded Binding Protein Ans- Binds to unwound strands of DNA to prevent reannealing DNA Polymerase Ans- Enzyme responsible for DNA replication Uses ssDNA as a template and makes a complimentary st rand by polymerizing deoxynucleotides Synthesis in 5' to 3' direction List the DNA polymerases in E. Coli Ans- Pol I, II, III DNA pol I Ans- Removes RNA primers and fills the gaps, proofreads DNA pol II Ans- DNA repair enzyme expressed in response to DNA damage DNA pol III Ans- Using parental DNA as a template, synthesizes new DNA strand by adding nucleotides to an RNA primer or a pre -existing DNA strand List the DNA polymerases in eukaryotes Ans- α, β, δ, ε, γ α polymerase Ans- Initiation of nuclear DNA replication β polymerase Ans- DNA repair δ polymerase Ans- Principal polymerase in leading and lagging strand sythesis, highly processive ε polymerase Ans- Leading and lagging strand synthesis , sensor of DNA damage, checkpoint control γ polymerase Ans- Mitochondrial DNA replication RNAse H Ans- A nuclease that specifically degrades RNA chains in DNA in eukaryotes (DNA Poly I in prokaryotes) DNA Ligase Ans- Seals nicks in dsDNA Telomerase Ans- Adds telomeres to the ends of chromosomal DNA, RNA -dependent DNA polymerase (has its own RNA primer) Semi -conservative model Ans- One parent strand and one newly synthesized strand
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller ExamArsenal. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $13.49. You're not tied to anything after your purchase.
