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What are the different types of doorbells?
There are 2 types of doorbells and they are: 1.Wired 2.Wiredless But there are also Door Chimes and Doorbells
What are the 2 types of Balitaw?
2 types of balitaw 1 it is a food like palitaw and 2 it is like a food palubog
What are the 2 types of swamps?
Marshes and Bogs short answer
What are the 2 types of reproductives?
asexual and sexual reproduction
What are 2 types of communities?
Myspace, Twitter, Facebook etc.
Difference between inducible and repressible operons?
Inducible operons are normally turned off but can be turned on by an inducer molecule, such as lactose in the lac operon. Repressible operons are typically turned on but can be turned off by a corepressor molecule, like tryptophan in the trp operon. The key difference is in their default state and the signal that controls their activity.
What organisms have operons?
Operons appear most in prokaryotes, however can also be found in some eukaryotic organisms such as the nematode. The nature of this is because operons produce polycistronic mRNA, which is used mostly by bacteria, whereas eukaryotes use monocistronic mRNA.
How mutant organism assist scientists in understanding how normal physiological processes take place?
understanding of how operons are controlled was achieved by the "knockout" mutants- that each lacked one of the genes in the operons and its regulatory region.
Are hox genes regulated by operons?
No, hox genes are not regulated by operons. Operons are found in prokaryotes and involve a group of genes that are transcribed together under the control of a single promoter. Hox genes are a group of eukaryotic genes that play a key role in embryonic development and are regulated by complex mechanisms involving enhancers and other regulatory elements.
Eukaryotic DNA sequences called enhancers have a function similar to the of prokaryotic operons?
Eukaryotic DNA sequences called enhancers have a function similar to the operators of prokaryotic operons. In eukaryotic cells, repressor proteins inhibit transcription by binding to silencers.
Why have no operons been found in eukaryotic cells?
Operons are not common in eukaryotic cells because eukaryotic genes are typically regulated individually by diverse mechanisms such as transcription factors, enhancers, and silencers. Eukaryotic gene expression is more complex and often involves tissue-specific regulation, post-transcriptional modifications, and chromatin remodeling, which are not typical features of prokaryotic operons.
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 are the proteins that bind to DNA and turn on operons by making it easier for RNA polymerase to bind to a promoter called?
transcription factor
How is protein synthesis different in prokaryotes and eurkaryotes?
One way that protein synthesis differs between prokaryotes and eukaryotes is that gene groups that produce proteins are organized into operons in prokaryotes, but they are not organized into operons in eukaryotes. Also, protein synthesis in eukaryotes involves more protein and is a more intricate process than in prokaryotes.
Proteins that bind to DNA and turn on operons by making it easier for RNA polymerase to bind to a promoter are called?
Transcription factors are proteins that bind to DNA and help regulate the initiation of transcription by RNA polymerase at promoter regions. They can enhance the binding of RNA polymerase to the promoter, thereby turning on the expression of specific operons.
Proeteins that bind to DNA and turn on operons by making it easier for RNA polymerase to bind to a promoter are called?
Transcription factors.
What are oprons?
Operons are clusters of genes that consisting of one operator and promoter. There are two kinds of operons they are: Lac operon and try operons. The lac operon consist of clusters of 3 genes which are responsible for metabolism of glucose. When there is lactose in the environment the lac operons is transcript. The lactose binds to the repressor that was binding to the operator inhibiting the poly RNA to transcript the gene, but when lactose binds it causes the conformation to change and resulting in falling of the operator. When the repressor falls off the poly RNA can transcript the gene. When lactose is not present the repressor is activated and binds to the operator inhibiting poly RNA from transcribing the gene.The try operons consist of 5 genes under the control of one operator and promoter for synthesising trytopahan. When tryptophan is not present in the environment the gene is transcripted. When there no tryptophan the repressor is inactive and falls of the operator thus letting poly RNA transcriping the gene. When tryptophan is present there is no need in making the trypophan. The trypophan binds to the repressor activating and letting it bind to the operator and inhibiting the poly RNA from transcribing the gene.
