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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.
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.
What would happen to the lac operon if a bacterium were growing in the presence of both glucose and lactose?
In the presence of both glucose and lactose, the lac operon would be repressed. Glucose inhibits the production of cAMP, which is needed to activate the lac operon. Since glucose is the preferred energy source, the bacterium would utilize glucose and the lac operon would remain inactive.
Is amylase made by the lac operon?
No, the lac operon is involved with the metabolizing lactose. Amylase is a enzyme, thus a protein and made like all proteins. Translation on ribosomes and modification in the ER and modification/shipping in the Golgi. Still, lac operons are bacterial and prokaryote while amylase is a eukaryote enzyme.
The operon that controls the metabolism of lactose is called the what?
its an operon required for the transport and metabolism of lactose.
Are operons found in eukaryotes?
"False. (I found the answer in my Biology textbook)" Not true. An operon is technically more than one gene sequence that is controlled by a repressor or signal. Recent research into eukaryotic genes, especially those in protists and chordates, have revealed that eukaryotes also have operons, though they are slightly different in complexity to the ones found in prokaryotes, giving rise to the conclusion that operons are more common than expected.
What genes is not a part of the lac operon?
repressor gene
What is a clue that the lac operon is on?
One clue that the lac operon is on is the presence of lactose in the environment. The lac operon is induced when lactose is available as a substrate for the lac repressor protein, allowing transcription of genes involved in lactose metabolism.
Why lac operon the gene expression is switch off?
explain the regulation of gene expression in 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.
When is lac operon most active?
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 on when lactose is present in the environment and glucose is scarce. This leads to the activation of the lac repressor protein, allowing the expression of genes involved in lactose metabolism. The lac operon is turned off when lactose is absent or glucose is abundant, which prevents the unnecessary expression of these genes.
The lac operon is shut off when what is absent?
The lac operon is shut off when lactose is absent. In the absence of lactose, the repressor protein binds to the operator site, preventing transcription of the lac operon genes.
When does the induction of the lac operon occur?
The induction of the lac operon occurs when lactose is present in the environment and glucose is limited. The presence of lactose leads to the activation of the lac repressor protein, allowing RNA polymerase to bind to the promoter region and transcribe the genes involved in lactose metabolism.
What would happen to the lac operon if a bacterium were growing in the presence of both glucose and lactose?
In the presence of both glucose and lactose, the lac operon would be repressed. Glucose inhibits the production of cAMP, which is needed to activate the lac operon. Since glucose is the preferred energy source, the bacterium would utilize glucose and the lac operon would remain inactive.
What are the roles of allolactose in the lac operon and tryptophan in trp operon?
allolactose acts as an inducer
