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DNA Replication and Transcription Concepts Quiz

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DNA Replication and Transcription Concepts Quiz

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Questions and Answers

What is the function of Topoisomerase in DNA replication?

To proofread the strand
To prevent supercoils (correct)
To produce supercoils
To synthesize nucleotides

What is the role of Primase in DNA replication?

To proofread the strand
To lay down primers and enable DNA Polymerase III (correct)
To remove primers
To synthesize nucleotides

What is the function of DNA Polymerase III?

To fuse ends of nucleotides together
To synthesize nucleotides
To remove primers
To proofread the strand and has an exonuclease activity (correct)

What is the purpose of NRTI in HIV treatment?

To inhibit viral replication by incorporating a nucleotide with no OH group (C) Signup and view all the answers

What is the role of Ligase in DNA replication?

To fuse ends of nucleotides together at the lagging strand (B) Signup and view all the answers

What is the purpose of P53 in cellular reproduction?

To command apoptotic genes when there’s a malfunction during replication (C) Signup and view all the answers

What is the role of Mediator in gene transcription?

It acts as a binding site for gene-specific transcription factors (D) Signup and view all the answers

Which transcription factor enhances the attachment of RNA polymerase II and elongation factors?

CREB (B) Signup and view all the answers

What is the function of TFIIH in transcription?

It catalyzes the movement of RNA polymerase II (A) Signup and view all the answers

What is the sequence that marks the end of a transcript for termination?

AAUAAA (B) Signup and view all the answers

Which factor is involved in cleaving mRNA downstream of the poly A signal?

CPSF 75 (D) Signup and view all the answers

What is the role of NElF in transcription?

It inhibits P-TEFB (C) Signup and view all the answers