When environmental conditions are optimized for promoting cellular growth, which statements are likely to be true? (choose all that apply). 1.Bacteriophage will enter the lytic cycle 2.Bacteriophage will enter the lysogenic cycle 3.Proteases will degrade cII 4.The transcription of cI will be activated

Q: Give 4 examples of transcription factors / non-structural proteins you have learned in this course?…

A: Since you have posted multiple questions we solve the first two questions for you. To get the…

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: Explain why large amounts of transcript result when a bacterium with a lac Operon is in a medium…

A: Transcription is the process by which RNA is synthesized from DNA. The messenger RNA or mRNA…

Q: 1.True or false: In a bacterial species with a "lac operon", the repressor protein will be bound to…

A: Prokaryotic gene regulatory system is known as operon system. In this process the expression of…

Q: sRNA acts as a marker, flagging the inhibitory protein for ubiquitination and allowing translation…

A: Proteins are synthesized by the process of translation and are modified after post-translational…

Q: 1- which of the following can be used for treating/combating bacterial infections a. targeting…

A: Bacteria are unicellular organisms, having sizes of 0.5 micrometers to 2 micrometers. They cause…

Q: Which of the following statements uses the term homologous correctly?A. The two X chromosomes in…

A: Homologous genes refer to the genes that are inherited in two species by a common ancestor. These…

Q: Which of the following statements is/are TRUE for the promoters? The Pribnow box and TATA box are…

A: A promoter is a short region of DNA upstream of  gene where RNA Polymerase recognizes the start site…

Q: Explain what is c-myc translocation and why it results in overexpression of c-myc. What is the role…

A: Epstein-Barr virus or EBV is one of the most common viruses found in the human body. They pass from…

Q: If lactose and glucose are provided in the growth medium of a culture of E. coli, then   a. Both…

A: Introduction: The correct choice is option d. Lac operon is repressed

Q: Which of the following statements concerning the sequence of events involved in the initiation of…

A: Transcription is a process in which RNA transcript is formed from the DNA with the help of RNA…

Q: Some organisms have mechanisms in place that will override transcription termination. One such…

A: The HIV-1 (Human Immunodeficiency virus-1) Tat (transactivator of transcription) gene codes for a…

Q: UVTA encodes a DNA repair protein and is regulated by LexA. Which of the following could be…

A: The uvrA gene codes for the repair protein and is negatively regulated by the LevA gene.  The LevA…

Q: A eukaryotic cDNA was ligated to a phage DNA which was transfected into a bacterial host cell. The…

A: The cDNA is produced from the mature mRNA by the action of reverse transcriptase enzyme.

Q: For each of the 4 regulatory states of the lac operon shown in the following diagram, answer the…

A: Genes active in lactose synthesis are found in E. coli's lac operon. When lactose is present but…

Q: You grow bacteria in media where the only carbon source is lactose (rich lactose media). Which of…

A: Introduction- Lysogen is defined as the strain of bacteria affected by a virus, i.e., a phage that…

Q: A lac operon containing one mutation was cloned into a plasmid, which was introduced by…

A: (a) The plasma i gene forms such a type of repressor that will not be able to bind the inducer.

Q: Match each of the following mechanisms with how it can change the levels of gene products--whether…

A: Operons are DNA segments that include groups of associated genes. They consist of a promoter region,…

Q: Please choose the correct answer. The transcriptional complement of the DNA strand with the code 3’…

A: Transcription is the process in which DNA is copied to RNA. Translation is the process of making…

Q: The diagram below represents the tryptophan operon with the trp leader MRNA transcript enlarged to…

A: It explains how gene regulation occurs at the transcriptional level in bacteria. The unit of…

Q: What are the effects of the following conditions on Lac operon of bacteria? Do not forget to mention…

A: Lac Operon helps in the metabolism of lactose in bacteria.

Q: Give all possible genotypes of a lac operon that produces, or fails to produce, β-galactosidase and…

A: An operon is defined as a group of genes that have a common promoter and regulator and also…

Q: The lac operon is strongly transcribed when which of the following sugars are present in the growth…

A: The lac operon is an operon or group of genes with a single promoter (transcribed as a single mRNA).

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: What will most likely happen when the -35 element and pribnow box are mutated? a. The sigma factor…

A: -35 element and pribnow box both act as the essential part of the promoter sequence for DNA…

Q: The lac operon has 4 genes, I, Z, Y and A. For each scenario, tell me the result of the mutation,…

A: The lac operon is an operon or group of genes with a single promoter. The genes in the operon…

Q: The MRNA for a mammalian peptide that enhances electrolyte transfer to reduce paralysis was spliced…

A: The cells are of two types eukaryotic and prokaryotic cells. The primary difference between the cell…

Q: Complete Table 1, indicating how much (lots, little, none) of the above gene product would be made…

A: Transcription It is defined as the process of transcribing the segment of the DNA to the RNA, which…

Q: Create a cloning approach that will allow the expression of the SARS-CoV 2 nucleoprotein (NP) in…

A: A gene is a distinct unit of genetic information that is necessary for the creation of a…

Q: You are examining a set of genes from a phage that are transcribed late in infection. You know that…

A: Transcription: It is a process of synthesis of mRNA transcript from the double-stranded DNA as a…

Q: Bacteriophage lambda is integrated in DNA of a host cell, which is exposed to UV light in a body of…

A: Lambda phage's life cycle is regulated by various repressors and regulators  Such as cll and cro…

Q: You are studying a bacterial plasmid that contains 3 operons and 9 genes. How many transcriptional…

A: In bacteria, similar and related genes are often found in a cluster on the chromosome, where they…

Q: For transcription of middle promoters in T4 phage, the anti-sigma factor, AsiA, will а. bind -10…

A: The bacteriophage T4 Alt gene product is a component of the phage head and, together with the phage…

Q: Contrast the effects of mutations in genes encoding sporulation-specific sigma factors with…

A: Introduction Mutation in sigma factors:- Sigma factors are subunits of all bacterial RNA…

Q: Can you please answer question 33 and 36

A:

Q: Which diagram shows a system in which the lac operon genes are NOT going to be transcribed by the E.…

A: The prokaryotic gene expression is regulated by operon system that involves expression of polycystic…

Q: Match the sequence to its function.…

A: Operator genes contain the code needed to start the process of converting one or more structural…

Q: a)How far along the DNA would the transcription "bubble" formed by RNA polymerase move in 10…

A:

Q: Which of the statements about the attenuator region of the trp operon is TRUE? Choose an answer…

A: It is located upstream of the operator.

Q: Explain how the lac operon is regulated under the following conditions. Include the following terms…

A: Lactose can be broken down by E. coli bacteria, however, it is not their preferred fuel. They would…

Q: What is an operon ? a. A series of genes controlled by the same operator b. A series of genes on the…

A: Operons are the functioning unit of DNA that consists multiple genes grouped together with an…

Q: You are growing E. coli in a laboratory in order to study their operons. The growth media you are…

A: The bacterial gene transcription is regulated by the operon system that regulates the expression of…

Q: Which of the following statements about the control of genes involved in galactose metabolism in…

A: Genes are the basic structural and functional unit of heredity. They carry coded genetic information…

Q: 3.1 Which of the following is NOT true about the lac operon? I) The lac operon is use to help…

A: ANSWER;- B) is NOT true about the lac operon. Allolactose binds to the repressor so they can bind…

Q: 4. The graph below was taken from a paper by Galardi et al., 2007, studying the role of two…

A: Introduction: P27 is an important inhibitor in the process of proliferation of cells. It inhibits…

Q: RNAi:   a) is a cellular defense system against viral replication   b) involves dicer…

A: RNA stands for ribonucleic acid. It consists of ribonucleotide sub units.

Q: An E. coli cell as the following genotype for the lac operon system:  I- OC Z+ / F’ I+.  Which term…

A: The presence I+ repressor is dominant to the absence of a repressor I-. Oc mutants:-  these are the…

Q: There is Hyaluronic acid synthesis occuring in Group X Strep and it is controlled by an operon with…

A: has operon  Hyaluronic acid synthesis operon is an operon system that is required for synthesizing…

Q: The figure above shows the structure of lac operon. Which of the following BEST describes what…

A: These are the operon gene found in prokaryotes and the lac operon is an inducible operon.

Viral Replication

The virus is acellular and considered non-living outside the host cell. The replication of the virus occurs only inside the living cells. Only a few genes are present in the smallest virus, whereas many genes are present in the largest virus. These genes encode specific viral proteins.