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Description: The nucleic acid polymerase with less effective transcription proof-reading and increased mutations is:a.DNA Pol.O b. RNA Pol.

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Biology

e nucleic acid polymerase with less effective transcription proof-reading and increased mutations is: O a. DNA Pol. O b. RNA Pol.

BIOLOGY:CONCEPTS+APPL.(LOOSELEAF)

10th Edition

ISBN:9781305967359

Author:STARR

Publisher:STARR

Chapter9: From Dna To Protein

Section: Chapter Questions

Problem 7SA: Energy that drives transcription is provided mainly by _______ . a. ATP c. GTP b. RNA nucleotides d....

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Concept explainers

Gene Interactions

When the expression of a single trait is influenced by two or more different non-allelic genes, it is termed as genetic interaction. According to Mendel's law of inheritance, each gene functions in its own way and does not depend on the function of another gene, i.e., a single gene controls each of seven characteristics considered, but the complex contribution of many different genes determine many traits of an organism.

Gene Expression

Gene expression is a process by which the instructions present in deoxyribonucleic acid (DNA) are converted into useful molecules such as proteins, and functional messenger ribonucleic (mRNA) molecules in the case of non-protein-coding genes.

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Question

The nucleic acid polymerase with less effective transcription proof-reading and increased mutations is:
a.
DNA Pol.
O b. RNA Pol.

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Step 1: Explaining Proof reading activity of polymerases

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Step 2: Explaining why RNA polymerase ls less euficient in proof reading ing

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B. Briefly describe/summarize what happens in Transcription (focus on the enzymes necessary for each step, the specific location in the cell for this event, etc). C. Briefly describe/summarize what happens in Translation (focus on the enzymes necessary for each step, the specific location in the cell for this event, etc).
Promoters are DNA sequences a. near a transcription start site b. bound to a repressor protein c. that inhibit transcription of a gene d. that stimulate ncRNA activity
Energy that drives transcription is provided mainly by _______ . a. ATP c. GTP b. RNA nucleotides d. RNA polymerase
Binding of _______ to _______ in DNA can increase the rate of transcription of specific genes. a. activators; repressors c. repressors; operators b. activators; enhancers d. repressors; enhancers
Which of the following is an example of positive control? (a) transcription occurs when a repressor binds to an inducer (b) transcription cannot occur when a repressor binds to a corepressor (c) transcription is stimulated when an activator protein binds to DNA (d) a and b (e) a and c
Sigma (σ) factor is needed during which stage(s) of transcription? a. Initiation c. Termination b. Elongation d. All of the above
the nucleotide excision repair system can undo damaging caused by UV radiation? a) cataracts in lens of the eye b) protein-protein cross-links c) thymine dimers d) alternative splicing errors e) apurinic sites
To start transcription, RNA polymerase binds to a please explain your answer a.initiator complex b.promoter sequence c.trigger factor d.Rho factor e.Shine-Dalgarno sequence
Which of the following statements is/are TRUE for transcription? A. RNA polymerase uses one strand of DNA, the antisense strand, for RNA synthesis. B. The first ribonucleotide binds to the Pribnow region. C. RNA polymerase moves from 5’ → 3’, while the RNA polymerization is from 3’ → 5’. D. All four ribonucleoside monophosphates are required.
In bacterial RNA polymerase, the sigma factor A. contains the catalytic activity of the polymerase B. remains part of the polymerase throughout transciption. C. recognizes promoter sites in the DNA D. recognizes transcription termination sites in the DNA E. is a subunit of DNA polymerase III
What will most likely happen when the -35 element and pribnow box are mutated? a. The sigma factor will not be able to bind to TBP. b. The rate of transcription will increase. c. RNA Polymerase II will not be able to bind to the promoter region. d.
In eukaryotic cells, transcription cannot begin until(A) the two DNA strands have completely separated and exposed the promoter.(B) several transcription factors have bound to thepromoter.(C) the 5¿ caps are removed from the mRNA.(D) the DNA introns are removed from the template.