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repressor gene
Ambrose Krajcik
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Is the lac operon the only example of genes regulated by repressor proteins?
False
What is a clue that the lac operon is on?
The lac operon uses a two-part control mechanism to ensure that the cell expends energy producing the enzymes encoded by the lac operon only when necessary. In the presence of lactose, the lac repressor halts production of the enzymes encoded by the lac operon.
When does the induction of the lac operon occur?
The lac operon is most active when glucose levels are low and lactose is present.
When is gene expression blocked in the lac operon system?
The repressor protein blocks the genes from making mRNA.
What turns the lac operon on and off?
The lac operon is turned off and on by repressors.
Is the lac operon the only example of genes regulated by repressor proteins?
False
What is a clue that the lac operon is on?
The lac operon uses a two-part control mechanism to ensure that the cell expends energy producing the enzymes encoded by the lac operon only when necessary. In the presence of lactose, the lac repressor halts production of the enzymes encoded by the lac operon.
How many genes in the lac operon are found in e. coli?
My answer is 3, I am pretty sure I am right, but I would double check to make sure. I am in ninth grade taking biology at PineTree.
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.
When does the induction of the lac operon occur?
The lac operon is most active when glucose levels are low and lactose is present.
When is gene expression blocked in the lac operon system?
The repressor protein blocks the genes from making mRNA.
What turns the lac operon on and off?
The lac operon is turned off and on by repressors.
Is operon the sequence of bases on a gene that does not code for protein?
operon is a group of genes regulated by a single promoter and operator. . . generally all the genes (structural genes of a particular operon) regulate a specific metabolic pathway. . (eg : lac operon in bacteria; where 3 genes are regulated by a single promoter sequece which help in the catabolism of lactose). . . if you have any doubts mail me at vegi.chaitanya@gmial.com
What three adjacent structural genes does the Iac operon consist of?
The lac operon which facilitates or enables lactose digestion to take place has three adjacent structural genes. These genes include lacZ, lacY and lacA. They all have their own unique purpose.
The operon that controls the metabolism of lactose is called the what?
its an operon required for the transport and metabolism of lactose.
Why lac operon the gene expression is switch off?
explain the regulation of gene expression in lac operon.
When is lac operon most active?
The lac operon is most active when glucose levels are low and lactose is present.
