Which of the following is the best description of a transcription factor? A. A protein that brings the correct nucleotides to RNA polymerase B. A protein that binds to specific DNA sequences C. A DNA sequence that binds to RNA polymerase D. A modification that is made to mRNA to help it be exported from the nucleus. .

Which of the following is the best description of a transcription factor? A. A protein that brings the correct nucleotides to RNA polymerase B. A protein that binds to specific DNA sequences C. A DNA sequence that binds to RNA polymerase D. A modification that is made to mRNA to help it be exported from the nucleus. .

Name: Which of the following is the best description of a transcription fact
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Description: Which of the following is the best description of a transcription factor?A. A protein that brings the correct nucleotides to RNA polymeraseB. A protein that binds to specific DNA sequencesC. A DNA sequence that binds to RNA polymeraseD. A modificatio

Biology (MindTap Course List)

11th Edition

ISBN:9781337392938

Author:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg

Publisher:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg

Chapter14: Gene Regulation

Section: Chapter Questions

Problem 10TYU: Which of the following is an example of positive control? (a) transcription occurs when a repressor...

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A gene is constitutively expressed when it is: a. always copied into RNA, and the RNA is always used to make protein b. used to make 2 different mRNAs from 1 pre-mRNA c. only copied into RNA in certain cell or tissue types, or under certain circumstances d. always copied into RNA, but the RNA is only used to make protein under certain conditions
Which of the following mechanisms may create multiple mRNAsfrom the same gene?a. posttranslational controlb. alternative mRNA splicingc. binding of a transcription factord. chromatin remodelinge. miRNAs
Which statement/s is/are TRUE about transcription?A. During transcription, DNA polymerase binds to RNA and separates the DNA strands.B. RNA polymerase uses one strand of DNA as a template to assemble nucleotides into a strand of RNA.C. RNA polymerase binds only to DNA promoters, which have specific base sequences.D. Promoters are signals in RNA that indicate to RNA polymerase where to begin transcription.E. Transcription occurs in the 3’ to 5’ direction with respect to the growing mRNA strand.
Which of the following base sequences is/are used during transcription?a. Promoter and terminatorb. Start and stop codonsc. Ribosome-binding sequenced. Both a and b
Which of the following statament is NOT TRUE about gene expression? Lüffen birini seçin: O a. Gene expression is the process by which DNA directs the synthesis of proteins O b. During gene expression, the information encoded in genes is used to make specific polypeptide chains or RNA molecules. O c. The expression of genes that code for proteins includes two stages: replication and translation O d. Translation is the synthesis of a polypeptide using the information in the MRNA.
Arrange the statements in their proper order by writing the corresponding letter (e.g. A) for each statement in the space provided below. A. The single-stranded RNA would complement the target RNA. B. Gene expression is inactivated once the mRNA is no longer accessible for translation. C. The risk-induced silencing complex which is composed of RNA and protein subunits is formed. D. Double-stranded, non-coding RNA is cleaved by Dicer. E. The mRNA can be cleaved or remain bound by the RISC. 1. 2. 3. 4. 5.
Which of the following describes transcription factors? The addition or deletion of methyl and acetyl groups to regulate transcription Proteins that specifically bind to promoter or enhancer regions to initiate transcription The transcription initiation sites of DNA that bind RNA polymerase DNA regulatory elements that actively repress the transcription of a gene O Varying sequences that are or are not included in the instructions to make a protein
Which of the following apply to transcription: Synthesis of a chromosome using DNA polymerase that produces two new chromosomes O Synthesis of a DNA molecule using RNA polymerase that produces multiple genes O Synthesis of a mRNA molecule using DNA polymerase that produces protein O Synthesis of a mRNA molecule using RNA polymerase that is a copy of a gene O Synthesis of a protein from a specific mRNA molecule that requires a ribosome
How can transcription factors influence the transcription of DNA? Select all that apply. Inhibit transcription by preventing RNA polymerase from binding to promoters Inhibit translation by preventing the binding of mRNA to ribosomes Enhance transcription by helping RNA polymerase bind to promoters Inhibit transcription by blocking the progress of RNA polymerase along a DNA molecule
e table below with the word that matches the definition in the right column. regulatory proteins (transcription factors) that speed up transcription by helping RNA polymerase bind to a promoter DNA sequences that indicate where transcription of a gene by RNA polymerase begins-typically located upstream from the 5C end Proteins bound to DNA that affect when and how fast a gene is transcribed These factors slow down/shut off transcription either by preventing access to promoters or by keeping RNA polymerase from moving along the DNA strand 3 Regulatory DNA sequénces located upstream or downstream from an associated gene that enhance the transcription rate of that gene when bound to specific proteins 3A sequence of DNA that when bound to a transcription factor blocks the inappropriate effect of an enhancer on a neighboring gene
If a cell's DNA was mutated such that it lost the promoter of a gene, you would expect: a. That ribosomes wouldn’t bind to that gene b. No effect since the promoter doesn't have any coding information for the amino acids in the polypeptide c. Ribosomes would never stop translating that gene d. Transcription factors for that gene would no longer bind to activate expression of that gene e. tRNA would no longer bind to the codons of that gene
Some events that take place in proteins synthesis are shown below: A. An enzyme reads the gene surface B. A transcription factor bonds to a promoter site C. An mRNA molecule is produced D. The transcript leaves the nucleus E. An MRNA polymerase attaches to the template strand Which if the following shows the correct sequence? ACEDB ЕВАCD ОВАСЕ D EACAD О САВЕD О АВСЕD В АEDC ВЕАСD EABCD