Q: All of the following statements about the repressor of the lac operon of E. coli are true EXCEPT…
A: The lac operon is a clustered group of related genes that are transcribed as a single unit. These…
Q: The nucleus of a eukaryotic cell is much larger than a bacterium, and it contains much more DNA. As…
A: Gene transcription and its regulation in prokaryotics is much simpler. But the eukaryotic Gene…
Q: in in Below is a schematic diagram showing a 3000 bp region of yeast genomic DNA. TSS 5' +1 (i) Draw…
A: Unlike prokaryotic RNA Pol., eukaryotic RNA Pol. II cannot initiate the transcription by itself.…
Q: For each of the following types of gene regulation, indicate whether it occurs in eukaryotes only,…
A: a. Differential splicing: It is the process by which certain exons are skipped during splicing to…
Q: The following is a difference between eukaryotic and prokaryotic gene regulation: O Only prokaryotes…
A: 1. Operons occur primarily in prokaryotes but also in some eukaryotes, Operons are very rare in…
Q: Compare and contrast the transcriptional regulation of GAL genes in yeast with that of the lac genes…
A: The way by which a cell regulates the conversion of DNA to RNA is termed as the transcriptional…
Q: Operons are a common feature of bacterial genomes. Which of the following statements about the lac…
A: Lac operon has three important genes that helps the bacteria to take up the lactose sugar when…
Q: During the process of * in eukaryotic cells, a * in the cytoplasm is read by e in the + direction,…
A: DNA --> RNA --> Protein Transcription: conversion of DNA sequence into mRNA by RNA…
Q: What is the major difference between transcriptional regulationin Archaea and eukaryotes?
A: Prokaryotes are the single cellular organism in which their nucleus is not confined and the absence…
Q: Genes can be transcribed into mRNA, in the case of protein coding genes, or into RNA, in the case of…
A: Transcription unit refers to the part of the gene that code for a protein.
Q: Introns are:
A: Introns are intergenic sequences i.e. These are stretches of nucleotides present in the pre-mRNA…
Q: Which of the following is true about the HesC gene? Choose all possible answe a) repressed by the…
A: Hematopoietic Stem Cells (HSCs) are the main cells inside the hematopoietic system that have the…
Q: In eukaryotes, the regulatory inputs have been amplified compared to prokaryotes, and a typical gene…
A: In eukaryotes, the process of the flow of genetic information of DNA into forming a functional…
Q: In response to potentially toxic substances (e.g., high levels of iron), eukaryotic cells often use…
A: Post-transcriptional modifications of pre-mRNA molecules like capping, splicing, and…
Q: Some prion-related diseases, such as familial fatal insomnia, areinherited. How would you expect the…
A: Familial fatal insomnia is a medical condition characterized by insomnia or trouble sleeping. This…
Q: Which of the following is NOT found in a prokaryotic genome? A. tRNA genes B. Operons C.…
A: There are 2 types of living cells present on earth, prokaryotic cells and eukaryotic cells.…
Q: Lactose intolerant individuals do not produce the enzyme lactase. Studies show that the gene that…
A: Lactose sugar is obtained from milk products and milk. When people do not produce enough lactase…
Q: Which of the following genes have internal promoter elements? 5S FRNA MRNA snRNA None of the above
A: Promoter : the sequence that are important in the initiation of transcription of a transcription…
Q: The mRNA used for the SARS-CoV-2 vaccine from Pfizer/BioNTech is generated in a cell-free system by…
A: The hereditary molecule deoxyribonucleic acid (DNA) transmits genetic information from one…
Q: In eukaryotic gene regulation, the Mediator complex mediates interactions between: The preinitiation…
A: Mediator complex found in Drosopila , mammals and yeaat. It interact with transcription factor…
Q: In your own words, describe the difference between rhodependent and rho-independent termination of…
A: Introduction Transcription is the process by which any active gene is transcribed into mRNA by the…
Q: Which of the following is characteristic of genes and gene regulation in bacteria but not in…
A: Genes are the functional units of DNA. It carries information that gets expressed and results in the…
Q: The eukaryotic metallothionein gene promoter consists of all EXCEPT: (A) MRE (в) GC Box c) GRE D…
A: Introduction Metallothionein is a protein that has a high affinity toward binding heavy metal ions,…
Q: An hnRNA molecule contains three exons, with the middle one being an “alternative” exon. How many…
A: Splicing is the process in which the introns are removed from the RNA, and the exons are combined to…
Q: A segment of a chromosome that regulates a gene located on the same chromosome is called a O…
A: Chromosomes are compact structures made up of DNA and protein.
Q: Do you expect operons to occur extensively in Eukaryotes? Yes or no and explain.
A: Operons (clusters of co-regulated genes with related functions) are a well-known feature of…
Q: Eukaryotes have a multitude of ways of regulating gene expression. Why are all these regulatory…
A: gene regulation is the process used to control the timing, location and amount in which genes are…
Q: Which of the following functions are characteristic of general transcription factors in eukaryotes?…
A: During the nuclear process of transcription, the DNA sequence is converted into messenger RNA…
Q: The following statement occurs early in this chapter:“. . . a crucial step in the regulation of many…
A: Transcription is a process in which a sequence of DNA is transcribed into mRNA. In bacterial…
Q: Suppose MYC regulates gene X by recruiting DNA methyltransferases (DNMTS). Which of the following…
A: cis regulatory elements are regions of non coding DNA which regulate transcription of neighbouring…
Q: Which of the following bind to the motif GGAGG in human COLQ gene? SRSF1 hnRNPH Both None
A: RNA is a vital component of the cell that is required for a variety of biological functions,…
Q: Suppose multiple mutations occur in the U1 snRNA. Which step mechanism would be directly impaired? O…
A: The processing of mRNA (messenger ribonucleic acid) includes the addition of a 5’ cap composed of…
Q: Many transcription factors function as dimers. The binding sites of dimeric transcription factors…
A: In eukaryotes the transcription process relies on transcription factors (like general transcription…
Q: Which of the following is FALSE? Sigma domain 3.2 makes direct contact with the 5'-end of the…
A: Gre proteins of prokaryotes are transcription elongation factors that promote an endogenous…
Q: A bacterial cell undergoes a change and the two Trp codons of the tryptophan leader sequence are…
A: Tryptophan operon is an example of repressible operon which remain transcriptionally active and…
Q: Nucleosome-free regions: A) are always only associated with genes that are being actively…
A: Introduction :- The organization of genetic material in eukaryotic organism's nucleus is done with…
Q: Which of the following gene regulation mechanisms are found ONLY in prokaryotes? a. coordinate…
A: DNA modifications can happen in both prokaryotes and eukaryotes, Transcriptional and Translational…
Q: Below is the double-stranded DNA sequence of part of a hypothetical yeast genome, which happens to…
A: Since you have posted a question with multiple sub-parts, we will solve first three sub-parts for…
Q: Which of the following sequences would likely bind a repressor if double stranded? O TGATCA O TGAGCA…
A: Introduction: Repressor: Repressors are proteins that will have a negative effect on gene…
Q: According to the operon hypothesis, the Z and Y genes of E. coli are classified as structural genes,…
A: The Lac Operon is responsible for Lactose metabolism and transport in E.coli. This operon consists…
Q: Which of the following is correct in prokaryotes? O All operators are cis elements. O All gene…
A: The correct answer is option 4th i.e.All Promoters require a trancriptional activator protein.
Q: The lac operon has which of the following characteristics? O 1) usually requires an activator…
A: In Eukaryotes all genes are separate and produce individual mRNAs on transcription. However, in…
Q: For the following gene, which type of regulatory sequence has likely been deleted in mutant 1?…
A: Transcription is the process of expression of genes and by this process RNA transcript is produced…
Q: You have an E.coli strain in which the lac operon is not expressed when glucose is absent and lacto…
A: The lactose operon (also known as the lac operon) is a group of genes present in E. coli and other…
Q: Which of the following is characteristic of genes and gene regulation in both bacteria and…
A: Genes are generally defined as the way that they are been collections of nucleotides that code for a…
Q: In eukaryotes, transcription factors can directly affect the ability of TFIID (TATA binding protein)…
A: A transcription factor is also known by the name of sequence-specific DNA binding factor. It is…
Q: Which of the following among A- C is not needed for bacterial transcription?
A:
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- Which of the following DNA regions is NOT involved in gene expression regulation in eukaryotes? Promoter-proximal elements Promoter Enhancer Operator **Enhancer is incorrectWhich of the following is not a control of gene transcription? The repression of a gene by the binding of a transcription factor to a silencer region Methylation of promotor sequences The stabilization of the initiation complex by transcription factors to allow RNA polymerase to begin replication The conversion of heterochromatin to euchromatin through histone demethylation The binding of an inhibitory protein to the 3' UTRWhich of the following is not a general description of the gene expression regulation mechanisms that operate in eukaryotic organisms processing level control replication level control post translational leve control transcriptional level control translational level control
- Which of the following is not a general description of the gene expression regulation mechanisms that operate in eukaryotic organisms? transcriptional-level control processing-level control translational level-control replication-level controlsWhich 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 proteinWhich of the following are regulatory elements (regions of DNA that are not transcribed or translated, but have a regulatory role)? Insulators Promoters Small interfering RNAS Transcriptional activator proteins Enhancers Transcription factors O Response elements
- Which of the following statements about the control of genes involved in galactose metabolism in yeast is FALSE? The genes coding for enzymes acting in the gal system are organized in an operon. The system involves a transcription activator. The system involves a transcription repressor. The presence of galactose sequesters the repressor in the cytoplasm. none of the aboveIn eukaryotes, which of the following statements is correct with regard to introns and exons? Mature mRNA contains a mix of introns and exons Introns in DNA are removed by spliceosomes Failure to remove introns can lead to production of faulty protein Exons are repeating sequences typically found at the end of a gene Introns are transcribed from promoter sequenceConsider gene expression in a eukaryotic cell. Which of the following is true for transcription in this cell? Select all that apply. MRNA has to be processed before leaving the nucleus MRNA can be synthesized by Transcription and at the same time this mRNA can be used for protein synthesis or Translation RNA polymerase requires several transcription factors for efficient transcription initiation During Transcription, the enzyme topoisomerase relaxes negative supercoiling in the DNA strands
- In eukaryotes, which of the following factor likely regulates the specific association of RNA polymerase(s) to a specific gene? O mediator complex O histones RNA polymerase O enhancerWhich of the following functions are characteristic of general transcription factors in eukaryotes? Hint: there may be more than one correct response. Be sure to check all that apply. They inhibit RNA polymerase binding to the promoter and begin transcribing. They bind to other proteins or to the TATA box. They are sufficient to allow high levels of transcription. O They initiate and regulate the transcription of genes. O They bind to sequences just after the start site of transcription.Consider gene expression in a prokaryotic or bacterial cell. Which of the following is true for transcription in this cell? Select all that apply. During Transcription, the enzyme topoisomerase relaxes negative supercoiling in the DNA strands MRNA can be synthesized by Transcription and at the same time this mRNA can be used for protein synthesis or Translation MRNA has to be processed before leaving the nucleus RNA polymerase requires sigma factor for efficient transcription initiation