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Which of the following statements best defines the term operon? An operon is a region of DNA that consists of a single gene regulated by more than one promoter.Which statement best describes an operon? (a) An operon is a region of eukaryotic DNA that consists of genes that encode the proteins needed for a specific function, and their regulatory elements.operon, genetic regulatory system found in bacteria and their viruses in which genes coding for functionally related proteins are clustered along the DNA. This feature allows protein synthesis to be controlled coordinately in response to the needs of the cell.
What best describes an operon?
Which statement best describes an operon? (a) An operon is a region of eukaryotic DNA that consists of genes that encode the proteins needed for a specific function, and their regulatory elements.
What does the term operon mean?
operon, genetic regulatory system found in bacteria and their viruses in which genes coding for functionally related proteins are clustered along the DNA. This feature allows protein synthesis to be controlled coordinately in response to the needs of the cell.
Gene Regulation and the Order of the Operon
Images related to the topicGene Regulation and the Order of the Operon
What best defines an operon quizlet?
Select the definition of operon. a protein that binds to DNA and controls transcription of related genes.
Which of the following best describes an inducible operon?
The lac operon is an inducible operon. Which of the following best describes this type of operon? Explanation: With an inducible system, the operon is off, meaning its repressor is active, or actively repressing the system from turning on.
What is an operon AP biology?
An operon is a cluster of genes with a single promoter. Lac operons, which are present in E. coli cells, are a good example of inducible operons. Inducible operons are usually off and only turn on when the protein it creates is no longer needed.
Which of the following is part of an operon?
The operon is mainly made up of three basic DNA components: The promoter, operator and the structural genes. Promoter region is a nucleotide sequence that enables a gene to be transcribed. The RNA polymerase recognized by the RNA polymerase.
What is an operon made of?
An operon consists of an operator, promoter, regulator, and structural genes. The regulator gene codes for a repressor protein that binds to the operator, obstructing the promoter (thus, transcription) of the structural genes. The regulator does not have to be adjacent to other genes in the operon.
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AP BIOLOGY Chapter 18 Flashcards | Quizlet
Which of the following statements best defines the term operon? An operon is a region of DNA that codes for a series of functionally related genes under the …
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Which of the following statements best defines the term operon? An operon is a region of DNA that codes for sugar-metabolizing enzymes. An operon is a region of …
Which of the following statements best defines … – Brainly.com
Answer:An operon is a region of DNA that codes for a series of functionally related genes under the control of the same promoter.
Which of the following statements best defines the term operon …
Answer: An operon is a region of DNA that codes for a series of functionally related genes under the control of the same promoter. Explanation: This …
What is operon and lac operon?
The lactose operon (also known as the lac operon) is a set of genes that are specific for uptake and metabolism of lactose and is found in E. coli and other bacteria.
What is the relationship between a gene and an operon quizlet?
An operon is a segment of DNA containing a cluster of genes, which are all under the control of a single promoter and the same regulatory elements. The genes in an operon get transcribed together into a single mRNA strand and therefore undergo the same transcriptional regulation.
What is the relationship between a gene and an operon?
Operons are a central feature of bacterial gene regulation (1). Each operon consists of a group of adjacent genes that are cotranscribed as a single mRNA. It is estimated that 50% of the genes in Escherichia coli are transcribed at least some of the time as part of an operon (2).
Which of the following statements best describes the regulatory mechanism of the lac operon?
Which of the following statements BEST describes the regulatory mechanism of the lac operon? The lac operon remains off unless an inducer molecule binds to and removes the repressor protein from the operator allowing RNA polymerase to transcribe genes 6, 7, 8.
The Lac operon | Regulation of gene expression
Images related to the topicThe Lac operon | Regulation of gene expression
What is a repressible operon?
A repressible operon is one that is usually on but which can be repressed in the presence of a repressor molecule. The repressor binds to the operator in such a way that the movement or binding of RNA polymerase is blocked and transcription cannot proceed.
What is inducible and repressible operon?
Inducible operon is a type of operon which gets switched on by a substrate chemical, i.e., an inducer. In a repressible operon, the regulation is done by a chemical substance known as a co-repressor which is normally the end product of that particular metabolic pathway.
What are the two types of operons?
Operons are of two types, inducible and repressible.
What is the meaning of operon in bacterial cells quizlet?
Operon. The functioning unit of genomic DNA containing a cluster of genes under the control of a single promoter. Coupled transcription/translation. (in Bacteria) Translation of the mRNA occurs simultaneously with its transcription.
What are operons in prokaryotes?
Operons are a feature of prokaryotic genomes and allow for the coordinated regulation, transcription and translation of functionally related genes.
What are operons MCAT?
operon: a unit of genetic material that functions in a coordinated manner using an operator, a promoter, and structural genes that are transcribed together.
Which of following is not an operon?
Solution : Except enhancer, all the given components are parts of an operon, Enhancer sequences are present in eukaryotes that, when bound by specific proteins or transcription factors, enhance the trascription of an associated gene.
Which one is not a part of operon?
All of these are part of an operon except an enhancer. Primarily, operons occur in prokaryotes and also in a few eukaryotes such as fruit fly, C. elegans, etc. Operons comprise many structural genes which are arranged in a common promoter and controlled by a common operator.
Which of the following is not actually part of an operon?
So, the correct answer is ‘primer gene‘.
Lac Operon
Images related to the topicLac Operon
What is a bacterial operon?
Bacterial Operons Are Coregulated Gene Clusters
In addition to being physically close in the genome, these genes are regulated such that they are all turned on or off together. Grouping related genes under a common control mechanism allows bacteria to rapidly adapt to changes in the environment.
What genes are included in an operon?
The DNA of the operon contains three genes, Gene 1, Gene 2, and Gene 3, which are found in a row in the DNA. They are under control of a single promoter (site where RNA polymerase binds) and they are transcribed together to make a single mRNA that has contains sequences coding for all three genes.
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