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 Unity and Diversity of Life (MindTap Course List)

14th Edition

ISBN:9781305073951

Author:Cecie Starr, Ralph Taggart, Christine Evers, Lisa Starr

Publisher:Cecie Starr, Ralph Taggart, Christine Evers, Lisa Starr

Chapter10: Control Of Gene Expression

Section: Chapter Questions

Problem 5SQ

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A binding .site for RNA polymerase is called a ___ . a. gene b. promoter c. codon d. protein
Binding of ______ to _______ in DNA can increase the rate of transcription of specific genes. a. activators; repressors b. activators; enhancers c. repressors; operators d. both a and b
1. Which of the following conditions will result to deactivation of a gene? a. histone methylation b. phosphorylation of a transcription factor c. binding of hormones to its nuclear receptor d. deactivation of transcription factor inhibitory protein 2. Direct complementarity of the microRNA to the target mRNA will lead to a. mRNA degradation b. inhibition of transcription c. chromatin remodeling d. inhibition of translation
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.- 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
4. It is known that RNA is a nucleic acid responsible for the synthesis of proteins. However, there is another nucleic acid alongside RNA: DNA. What role does the latter play in relation to RNA? a) RNA is synthesized in the cell in case too large a mutation damages the DNA. b) DNA has the reproductive genetic code of all cells and passes it on to RNA. c) DNA directs the synthesis of enzymes, while RNA synthesizes proteins. d) DNA synthesizes RNA according to a blueprint that includes the guidelines necessary for the structure of proteins.
1. What is the central dogma? What are the compounds involved in this process? (Keywords: transcription of DNA to RNA, translation of RNA to proteins; gene expression)
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…
3. Briefly describe the function of the following in protein synthesis: a) rRNA, b) tRNA c) mRNA
Mechanisms that govern gene expression do not operate during ___ . a. transcription b. RNA processing c. translation d. knockouts
How do pseudogenes differ from genes? a. They are not transcribed. b. They contain longer open reading frames (ORFs). c. They do not have introns. d. They use a different genetic code. e. Their protein-coding sequence contains more than one startcodon.
Which of the following statements is false? a. GTP is an energy source during various stages of translation. b. In the ribosome, peptidyl transferase catalyzes peptide bondformation between amino acids. c. When the mRNA code UAA reaches the ribosome, there isno tRNA to bind to it. d. A long polypeptide is cut off the tRNA in the A site so its Metamino acid links to the amino acid in the P site. e. Forty-two amino acids of a protein are encoded by 126nucleotides of the mRNA.