The antagonist of the inhibitor in down regulation is called: A. repressor B. promoter C. inducer D. none of the above

Q: Which of the following are possible reasons that a cell would regulate its expression of a gene?…

A: Gene expression is defined as the process or method by which the encoded information in a specific…

Q: Post-transcriptional control of gene regulation: None of the above Can stop gene expression quickly…

A: Proteins are a type of macromolecules that are critical for different varieties of roles in cellular…

Q: The lac operon is an example of ________ control in which the presence of an ________ is required…

A: lac operon is present in E.coli and it produce the enzymes which are required for the lactose…

Q: When bacteria are grown in the presence of high concentrations of tryptophan: O A. A repressor is…

A: Tryptophan is defined as an alpha-amino acid utilized in the biosynthesis of proteins and cannot be…

Q: A mutation in the operator region of the trp operon can prevent the trp repressor from binding to…

A: Operons are the functional unit of transcription and regulation of genes in almost all bacteria and…

Q: When tryptophan binds to trp repressor, this causes trp repressor to__________ to the trp operator…

A: An operon is a genetic administrative system in which genes code for specific proteins that are…

Q: What will result from the binding of a transcription factor to an enhancer region? a. decreased…

A: Introduction: To initiate transcription in the eukaryotic cell, RNA polymerase should bind to the…

Q: (c) more than one protein to be produced by a gene

A: Gene can be defined as the basic physical and functional unit of heredity.

Q: A mutation occurs in a gene, resulting in it being expressed at the wrong time during development.…

A: The mutation refers to change the sequence of nucleotide in a gene.

Q: Promoters and Enhancers Are the Major cis-Acting Regulatory Elements

A: Regulatory genes are the genes meant for controlling the function of structural genes. The important…

Q: Gene expression in bacteria is controlled by the operon model.  a) Why is the operon model…

A: BASIC INFORMATION  OPERON MODEL  This model of gene regulation was put forward by Francis Jacob and…

Q: Contrast the role of the repressor in an inducible system and in a repressible system.

A: DNA is the genetic material in most living organisms. It is the information hub of the cell that…

Q: Post-translational modifications of proteins can affect which of the following? a. protein function…

A: When RNA has been transported to the cytoplasm, it is being translated into protein whose control is…

Q: Which gene regulation event is ONLY present in prokaryotes?  a. transcription level of regulation…

A:

Q: Which statement is TRUE of the CRM (cis-regulatory module)? a) it codes for transcription factors…

A: The cis regulatory elements control gene expression at various developmental stages.

Q: Positive regulators are called: A. Repressors  B. Activators C. Enhancers D. None of the above

A: Transcription is a process by which the RNA is synthesized from the DNA sequence. RNA polymerase is…

Q: What is the name of the site where RNA polymerase binds to the DNA prior to the beginning of…

A:

Q: . Which of the following is an example of post-transcriptional gene repression?a. The amount of RNA…

A: Post-transcriptional gene repression means the expression of the gene in the form of protein is…

Q: Define and describe the roles of the following in transcription: a. transcription factors b. RNA…

A: Transcription is the process where the information in a DNA strand is copied and interpreted into a…

Q: Gene expression regulation by methylation of the cytosines in a promoter would be considered

A: Answer - Option B - Transcriptional regulation

Q: The functioning of enhancers is an example of(A) a eukaryotic equivalent of prokaryotic promoter…

A: Enhancer refers to a short region of DNA. It increases the process of transcription of a particular…

Q: The binding of iron regulatory protein (IRP) to the iron response element (IRE) in the 5′ region of…

A: The functioning of many different enzymes that are crucial for the survival of an organism require…

Q: A cell has a mutated mediator protein. a) How will this affect transcription of genes? (circle an…

A: Transcription factors and RNA polymerase II interact with mediator complexes. The key job of…

Q: Is each of the following statements true or false? A. An enhancer is a type of regulatory element.…

A: Gene is a section of DNA with information to construct a protein. Gene is actually made from a…

Q: Distant regulatory sites are called

A: During gene transcription some  regulatory genes are attached to the transcription site which…

Q: A researcher has just identified a new protein in bacteria that binds DNA near the promoter of a…

A: DNA (deoxyribonucleic acid) was discovered by Friedrich Miescher. Nucleotides are the structural…

Q: . heterochromatic regions decondense for gene expression a. pre-transcriptional control b.…

A: Heterochromatin regions are condensed regions of the chromatin that are transcriptionally switched…

Q: When taken up by a cell, which of the following molecules binds to a repressor so that the repressor…

A: In the subject of molecular biology, an inducer is a molecule that regulates gene expression. An…

Q: Zinc fingers

A: Zinc fingers: These are  fingerlike loop of peptides enclosing a bound zinc ion at one end. They…

Q: In a suppressor interaction, produce(s) a protein complex that is 1 mutation, active . 1 mutation,…

A: Any change or alteration to the composition of DNA other than recombination of the DNA is called a…

Q: Which of the following gene expression regulatory mechanisms saves the most energy but takes the…

A: Gene regulation expression defines a wide range of molecular mechanisms, that are used by the cell…

Q: Which of the following is an example of post-transcriptionalcontrol of gene expression?(A) the…

A: Post-transcriptional regulation is the gene expression control at the biological process common in…

Q: In the presence of allolactose, the lac repressor a. binds to the operator. b. binds to the…

A: Lac operon is present in E coli, and its function is lactose metabolism. It comprises of 3 genes…

Q: A signaling pathway causes a transcription factor binding to a particular promoter. What effect does…

A: Answer- Signaling transduction is the process by which any specific external physical or chemical…

Q: What is the difference between the core promoter and the regulatory promoter? a. Only the core…

A: Answer: Introduction: a promoter is a sequence of DNA to which proteins bind to start transcription…

Q: When  regulatory protein binds to a mature mRNA in the cytoplasm and prevents it from binding to a…

A: Translational regulation is the mechanism that aims to control the levels of protein synthesis from…

Q: Compare and contrast the activities of an activator protein anda repressor protein.

A: Gene regulation is a mechanism by which cells increase or decrease the productivity of any specific…

Q: A scientist is interested in producing flowers with a darker red color. To do this, the scientist…

A: Si RNA is a small interfering or silencing RNA, which is a non-coding, double stranded RNA molecule.…

Q: What are positive regulators (activators) and negative regulators (repressors)? Describe.

A: Activators and repressors are two types of gene regulators, with activators causing positive…

Q: Which of the following is an example of positive control? (a) transcription occurs when a repressor…

A: A positive control is described as an integral part of an experimental that has a tendency to…

Q: A regulatory region shows all of the following properties except

A: Ans - a) can be located in an exon. Regulatory regions cannot be present at the exon portion of a…

Q: The binding of the inducer to the repressor causes the repressor to O bind to the operator. O stop…

A: Lac operon is a type of gene expression in prokaryotes. There are genes that code for different…

Q: General transcription factors Select an answer and submit. For keyboard navigation, use the up/down…

A: The general transcription factors bind to other proteins or to a sequence element within the…

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: A repressor is a __________ that _________ transcription. a. small effector molecule, inhibits b.…

A: Transcription refers to the process in which the deoxyribonucleic acid (DNA) molecule is transformed…

Q: The regulator protein that acts on a negative repressible operon is synthesized as a. an active…

A: Operons consist of multiple structural genes grouped together with a promoter and an operator along…

Q: Binding of______ to_______ in DNA can increase the rate of transcription of specific genes. a.…

A: Transcription is a process in which one strand of DNA known as template strand is known as converted…

Q: A scientist identifies a potential transcription regulation site 300bp downstream of a gene and…

A: Introduction  Proteins are the key biomolecule in the biological system, any important physiological…

Q: Experiments show that mutations at gene E lead to non-repressible transcription of trp genes.  Why

A: In bacterial cells, the tryptophan operon is responsible for the synthesis of tryptophan amino acid.…

Microbial Taxonomy

Taxonomy is the science of naming, classifying, and describing organisms. The taxonomy will include all the plants, microorganisms, and animals on this planet. Carl Linnaeus coined the taxonomy term. He is known as the father of taxonomy. Microbial taxonomy is a criterion of grouping microorganisms into groups based on their similarities and past relatedness. Microorganisms belonging to the same group are differentiated from the others via grouping into categories. This differentiation makes the study of microorganisms easy. There are different types of microbial taxonomies like Numerical and Molecular taxonomy. The study of microorganisms is known as microbiology. Microbiology is a broad term that takes into account microbial cultures, taxonomic studies, evolutionary relationships. Microbial interaction and diversity are huge data that needs to be compiled under the subject of microbiology. Microbiology covers various organisms like bacteria, fungi, algae, plants, animals, etc.