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the coordinated control of gene expression in bacteria
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Who was the operon model of the regulation of gene expression in bacteria was proposed by?
In 1961 Jacob and Monod proposed the operon model of gene regulation
When does the induction of the lac operon occur?
The lac operon is most active when glucose levels are low and lactose is present.
What turns the lac operon on and off?
The lac operon is turned off and on by repressors.
How is lac operon different from trp operon?
1. in lac operon; gene activity is induced when lactose is present in the medium, whereas in case of trp operon, repression of the gene activity takes place in presence of tryptophan in the medium. 2. lac operon spans about 4-6kb...whereas trp operon spans abut 7kb. 3. lac operon helps in the breakdown of lactose into glucose and galactose, to generate energy( catabolic pathway ) in case of trp operon, it helps in the synthesis of enzymes required for the formation of the amino acid Tryptophan( anabolic pathway ). 4. lac operon is an example of positive regulation ; and trp operon is an example of negative regulation. Trp operon is also regulated by other mechanism called attenuation while no such even occurs in lac operon . .
The tryptophan operon is a repressible operon that is?
Turned off whenever tryptophan is added to the growth medium
Why lac operon the gene expression is switch off?
explain the regulation of gene expression in lac operon.
Who was the operon model of the regulation of gene expression in bacteria was proposed by?
In 1961 Jacob and Monod proposed the operon model of gene regulation
What was the Bohr model an attempt to explain?
Is not complete becuase not everythin is correct
The operon that controls the metabolism of lactose is called the what?
its an operon required for the transport and metabolism of lactose.
What acts as an on and off switch in an operon?
which part of an operon acts as the on or off switch?
When does the induction of the lac operon occur?
The lac operon is most active when glucose levels are low and lactose is present.
What turns the lac operon on and off?
The lac operon is turned off and on by repressors.
What are the roles of allolactose in the lac operon and tryptophan in trp operon?
allolactose acts as an inducer
Explain data model?
Explain data model?
How is lac operon different from trp operon?
1. in lac operon; gene activity is induced when lactose is present in the medium, whereas in case of trp operon, repression of the gene activity takes place in presence of tryptophan in the medium. 2. lac operon spans about 4-6kb...whereas trp operon spans abut 7kb. 3. lac operon helps in the breakdown of lactose into glucose and galactose, to generate energy( catabolic pathway ) in case of trp operon, it helps in the synthesis of enzymes required for the formation of the amino acid Tryptophan( anabolic pathway ). 4. lac operon is an example of positive regulation ; and trp operon is an example of negative regulation. Trp operon is also regulated by other mechanism called attenuation while no such even occurs in lac operon . .
The tryptophan operon is a repressible operon that is?
Turned off whenever tryptophan is added to the growth medium
Is operon proteins?
Operon is not a protein. It is a segment of DNA that has cluster of genes controlled by the elements such as promoter, operator. Lac operon is a classic example where it regulate the utilization of Lactose in the medium.
