Which of the following is TRUE of general transcription fact

Which of the following is TRUE of general transcription factors and transcriptional activator proteins?

General transcription factors are necessary for minimum levels of transcription, and transcriptional activator proteins allow for higher levels of transcription.

) What would be the effect on DNA replication of a mutation that destroyed the 5\'3\' polymerase activity in DNA polymerase I? A. Fidelity of the polymerase would decrease without this proofreading function. B. There would be a loss of the ability to synthesize DNA in the gaps created by the removal of RNA primers. C. RNA primers could not be removed from the DNA during replication. D. The double helix could not be denatured during replication. E. The template strands within the replication bubble would not remain separated. What is semiconservative replication? A. Replication that occurs in only one direction B. Replication that occurs during embryogenesis, when cells increase in number but the embryo itself does not increase in size C. Replication resulting in products that consist of one strand of template DNA and one strand that has been newly synthesized D. Replication of the DNA message into an RNA product E. Replication that results in products that consist of the template strands remaining together and the newly synthesized strands joining together Which of the following is TRUE of general transcription factors and transcriptional activator proteins?

General transcription factors and transcriptional activator proteins are required for the assembly of the basal transcription apparatus. General transcription factors and transcriptional activator proteins must bind to the core promoter in order to stimulate transcription. General transcription factors are unique to prokaryotes, and transcriptional activator proteins are unique to eukaryotes. Transcriptional activator proteins are required for any levels of transcription, and general transcription factors are required for higher levels of transcription. General transcription factors are necessary for minimum levels of transcription, and transcriptional activator proteins allow for higher levels of transcription.

Solution

Answer:

1). B. There would be a loss of the ability to synthesize DNA in the gaps created by the removal of RNA primers.

Explanation:

If the 5\'-->3\' polymerase activity is destroyed, the DNA polymerase I would be unable to synthesize new DNA strands if the 5\' -> 3\' polymerase activity was destroyed. RNA primers could be removed by DNA polymerase I using the 5\' --> 3\' exonuclease activity, but new DNA sequences could not be added in their place by DNA polymerase I.

2). C. Replication resulting in products that consist of one strand of template DNA and one strand that has been newly synthesized

Explanation:

Semi=half

Newly synthesized DNA consists of half of the parental DNA (conservation of parent DNA) and remaining half is new DNA.

3). D. General transcription factors are necessary for minimum levels of transcription, and transcriptional activator proteins allow for higher levels of transcription.

Explanation:

For most eukaryotic genes, general transcription factors and RNA polymerase (i.e., the basal transcription complex) are necessary for initiating transcription, but not sufficient for high levels of transcription. Additional regulatory sequences called enhancers and the proteins that bind to the enhancers are needed to achieve high levels of transcription.