3. During transcription: A. nucleotides are polymerized by DNA polymerase B. initiation occurs at a site recognized by the sigma factor C. only single gene-sized MRNA molecules are synthesized D. both DNA strands of a single gene are used as templates simultaneously E. thymine in RNA pairs with adenine in DNA

3. During transcription: A. nucleotides are polymerized by DNA polymerase B. initiation occurs at a site recognized by the sigma factor C. only single gene-sized MRNA molecules are synthesized D. both DNA strands of a single gene are used as templates simultaneously E. thymine in RNA pairs with adenine in DNA

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Description: 3. During transcription:A. nucleotides are polymerized by DNA polymeraseB. initiation occurs at a site recognized by the sigma factorC. only single gene-sized MRNA molecules are synthesizedD. both DNA strands of a single gene are used as templates s

Biology: The Dynamic Science (MindTap Course List)

4th Edition

ISBN:9781305389892

Author:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Publisher:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Chapter15: From Dna To Protein

Section: Chapter Questions

Problem 5TYK: Which of the following statements is false? a. GTP is an energy source during various stages of...

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1. Transcription: a)State the role of RNA polymerase in gene transcription.b. Explain why the DNA is not used directly for protein translation (i.e., why is mRNA used instead?).c. Explain what occurs when a gene’s promoter region is open for RNA polymerase binding.d. Explain what occurs when a gene’s promoter regions is blocked from binding RNA polymerase.e. Explain how two cells, such as liver cells and skin cells, can become specialized in structure and function despite containing the same genome.
3. Differentiate between factors and processes involved in transcription: Recognition of this DNA sequence is [Choose] required for transcription to initiate:. [ Choose ] PROMOTER Occurs when the ribosome reaches a RNA POLYMERASE stop codon on the MRNA TERMINATION INITIATION SITE ENHANCERS The main enzyme responsible for transcribing DNA into RNA is ELONGATION Will increase the efficiency of gene [Choose] expression, but are not essential for transcription. RNA polymerase "walks" along the template strand, adding a [Choose ] matching (complementary) RNA nucleotide to each existing ncleotide. The section of DNA from which the [Choose ) very first 5" RNA nucleotide is transcribed Question 4 1 pts hp 近

1.Describe the journey of a protein, from its synthesis to its final destination 2. Explain the different stages of transcription and the role of the elements involved with the right terminology (template vs. non-transcribed strand, promoter, stop sequence, TATA box, general and specific transcription factors, RNA polymerase II, etc.); 3. Explain what the maturation (modifications) of pre-messenger RNA consists of and its role
1. (a) The initiation factors form a complex with RNA polymerase Gene is switched ON Gene is switched OFF Does NOT affect the gene expression (b) RNA polymerase binds at the upstream region. Gene is switched ON Gene is switched OFF Does NOT affect the gene expression
9. Identify the TRUE statement about the process of transcription: * ORNA polymerase requires an RNA primer molecule before it can begin transcript ODNA is not needed for the process of transcription. RNA polymerase binds to a promoter region in the DNA to initiate transcription. O During the elongation phase, RNA transcripts are built from 3' to 5'. 10. Which is correct? * Translation occurs in the nucleus; transcription occurs in the cytoplasm O Transcription occurs in the nucleus; translation occurs in the cytoplasm Both transcription and translation take place in the cytoplasm Both transcription and translation occur in the nucleus
1.- Outline the general process of transcription (dna->rna) include a diagram a) include the basic enzymes involved and a description of their actions b) what is the product of transcription c)what will the cell do with the product d)where does the transcription take place in prokaryotic cell
1. Which of the following statements about the flow of genetic information is correct?A. Translation occurs prior to transcription during protein synthesis.B. During translation, the DNA template is converted to amino acids by the ribosomes.C. During transcription, the DNA template is converted to an RNA molecule by the enzyme RNA polymerase.D. Eukaryotic mRNA needs to be transported to the cytoplasm before the protein products are synthesized. 2. What is the main difference in the cell wall composition between eukaryotes and prokaryotes?A. Eukaryotic cell wall is mainly composed on sugar molecules while prokaryotic cell wall has both sugars and amino acids.B. Prokaryotic cell wall is mainly composed on sugar and lipid molecules while eukaryotic cell wall has both sugars and amino acidsC. Prokaryotic cell wall is mainly composed on sugar molecules while eukaryotic cell wall has both sugars and amino acids.D. Eukaryotic cell wall is mainly composed on sugar and lipid molecules while…
3a. Select all the correct types of RNA that are both the product of transcription and are also translated in the cytoplasm. ☐ snRNAs ☐ pre-tRNAs ☐ rRNA ☐ tRNA ☐ miRNA ☐ mRNA 3b. The ribozyme found in the ribosome catalyzes ... (which of the following?) a. the synthesis of pre-mRNA as part of the transcription process. b. the formation of the peptide bond. c. the association between the large and small ribosomal subunits. d. a reaction that uses RNA as a substrate.
1. A DNA base sequence transcribed into messenger RNA in the following sequence: TTATCTTCGGGAGAGAAAACA. a. If you read from left to right, what amino acids are coded by this sequence? (Note: The initiation sequence is disregarded in this example.) b. If proflavine treatment caused the deletion of the first adenine nucleotide on the left, describe the changes that would occur in the first six amino acids coded by this sequence?
6. Use the image to determine what type of mutation is found in each of the DNA strands below and what type of effect that would have on the protein made. OPTIONS: substitution, deletion, translocation, and insertion. DNA: CCC GGG mRNA: CCC Protein: Pro DNA: GAA CTT mRNA: GAA Protein: Glu DNA: TTA AAT mRNA: UUA Protein: Leu CCA GGT CCA Pro GTA CAT GUA Val TAA ATT UAA Stop Type of Mutation Substitution Substitution Substitution What happens when this type of mutation occurs?
1. What is a consensus sequence? What are the components of RNA polymerase and what are their functions? 2. Describe the steps involved with transcription initiation.? Describe the steps involved with transcription elongation. 3. Describe the steps involved with transcription termination. A consensus sequence is a sequence of DNA,RNA, or protein that has aligned sequence.
II. A double-stranded DNA molecule with the sequence shown below can produce a polypeptide that is four amino acids long. Identify which DNA strands are the coding and the transcribed template strands by circling C or T to the left of the table below, respectively. Use an arrow to indicate the direction of transcription. In the table, show the mRNA sequences and amino acids in this peptide. In spaces to the left and right of the table, label all 5' and 3' ends of all relevant nucleic acid strands. READ CAREFULLY: The table gives you the possibility of filling in answers that show transcription from either strand or in either direction. You are only required to fill in the information relevant to ONE PEPTIDE (no others). Refer to the genetic code on the following page. HINT: While we read and write in 2D from left to right, in the 3D world of a cell there is no such restriction on reading and writing associated with transcription or translation. AA mRNA TCA CGG AAT TTC TAG CAT GTA C or…