Which Statement Describes An Operon?

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Operon are set of genes transcribed under the control of an operator geneIt consists of an operator promoter regulator and structural genes. It consists of three adjacent structural genes a promoter a terminator and an operatorThe lac operon is regulated by several factors including the availability of glucose and lactoseIt can be activated by allolactose.

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In addition to structural genes the lac operon also contains a number of regulatory DNA sequences.

Which statement describes an operon?. 4which of the following statements describes the process regulated by the lac 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. Buildup of a small molecule induces expression of the enzymes that metabolize the small molecule.

This is the currently selected item. For the lac operon to be expressed lactose. Transcription is turned on when a specific molecule is present.

An operon is very important and is regarded as the functional unit of transcription and genetic regulation. C It is activated only when glucose is present in the growth medium. Transcription stops when the repressor gene product is activated.

Asked Feb 4 in Other by manish56 -33213 points 0 votes. A regulatory gene lacI I preceding the lac operon is responsible for producing a repressor R protein. The lac operon of the model bacterium Escherichia coli was the first operon to be discovered and provides a typical example of operon function.

An operon is a region of DNA that consists of a single gene regulated by more than one promoter. Which statement most accurately describes what happens to proteins that lack an er signal sequence. Which best describes an inducible operon.

An operon is a region of DNA that codes for a series of functionally related genes under the control of the same. An operon is a region of DNA that codes for a series of functionally related genes under the control of the same promoter. An operon is a region of DNA that codes for sugar-metabolizing enzymes.

Which statement describes an operon. The activated repressor binds to the operator region. B It is activated only when tryptophan is present in the growth medium.

A gene cluster controlled by a single promoter that transcribes to a single mRNA strand. Select the correct statement from a – d about lac operon Glucose or galactose may bind with repressor and inactivate it b In the absence of lactose the represser binds with operator region c Z-gene codes for permease. 2 The tryptophan operon in some bacteria is a repressible operon.

The lac operon is an example of an inducible operon that is also subject to activation in the absence of glucose Figure 3. A regulatory gene lacI I preceding the lac operon is responsible for producing a repressor R protein. An operon is a region of RNA that consists of the coding regions of more than one gene.

However when the cell has an excess amount tryptophan binds to the inactive repressor activating it. Structure of the lac operon. The gene products of the trp operon are responsible for the biosynthesis of tryptophan an amino acid inside the cell starting from chorismate.

The lac operon consists of a promoter P and operator O region followed by three structural genes lacZ lacY and lacA in the downstream. Which of the following statements describes the process regulated by the lac operon. The lac operon encodes three structural genes necessary to acquire and process the disaccharide lactose from the environment breaking it down into the simple sugars glucose and galactose.

Which statement describes an operon. Which of the following statements best defines the term operon. In the _______ of lactose the lac _______ binds to the lac _______ site.

A It is permanently active. An operon is a region of DNA that codes for sugar-metabolizing enzymes. The trp operon of prokaryotes is an example of such repressible operons usually kept turned on.

The lac operon consists of a promoter P and operator O region followed by three structural genes lacZ lacY and lacA in the downstream. Which statement best describes an operon. An operon is a region of RNA that consists of the coding regions of more than one gene.

Regulation of gene expression and cell specialization. Which of the following statements correctly describes this operon.

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