What is the function of the sigma factors in E. coli transcription?

A. bind to the replication origin sequence to initiate translation.

B. combine with the core enzyme to confer specific binding to a promoter.

C. can recognize DNA damage and recruit repair enzymes to the damage site.

D. are required for termination of transcription.

E. A. give the RNA polymerase proofreading activity.

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Patrina SchowalterLv2

13 Dec 2019

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DNA replication is Escherichia coli begins at a unique site called the:

	origin of responsiveness.
	origin of replication.
	replication origination site.
	oriDNA.
	start site.

During the replication of prokaryotic DNA,

	both strands are simultaneously synthesized in a continuous manner.
	one strand is synthesized in a continuous manner and the other is synthesized by reverse transcription.
	both stands are simultaneously synthesized in short pieces which are later joined by DNA ligase.
	one strand is synthesized continuously and the other is synthesized in short segments.
	both strands are synthesized continuously, but the lagging strand is synthesized only after the leading strand has been completely replicated.

The primase enzyme

	synthesizes a short stretch of RNA complementary to a part of the template DNA strand.
	synthesizes a short stretch of DNA that is complementary to a part of the template strand of DNA.
	acts as the recognition site to which DNA polymerases bind to start the replication process.
	replaces the RNA primers used to initiate DNA replication with DNA polymerase.
	ligates the nicks formed by discontinuous replication along the lagging strand.