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Prokaryotes do not have introns in their DNA because they lack a nucleus and have a simpler genetic organization compared to eukaryotes. Their genes are typically continuous sequences without interruptions, unlike eukaryotic genes which can have introns that need to be spliced out during gene expression.
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Do mitochondria have introns?
Yes, mitochondria have introns. These introns are non-coding sequences found within the DNA of the mitochondria. They are typically removed during the process of RNA splicing to produce functional mitochondrial mRNA.
Why would a prokaryote fail to express a transplanted eukaryotic gene?
The biggest obstacle to expressing eukaryotic genes in prokaryotes is their structure. Eukaryotic genes have non-coding introns inserted between the coding exons, and these introns must be spliced out of the primary mRNA transcript before translation can proceed. The splicing is done by the spliceosome, a large, complex of RNA and protein. Prokaryotes do not have spliceosomes, thus eukaryotic genes would be transcribed with the introns intact, and translation by the ribosome would proceed on the primary mRNA transcript, resulting in non-functional proteins.
How is DNA in a prokaryote different than from DNA in a eukaryote?
DNA in prokaryotes is typically circular and exists as a single chromosome located in the nucleoid region, while eukaryotic DNA is linear and organized into multiple chromosomes housed within a membrane-bound nucleus. Additionally, prokaryotic DNA generally lacks introns and is not associated with histones, whereas eukaryotic DNA is associated with histones and often contains introns and exons. These structural differences reflect the complexity and organization of cellular processes in eukaryotes compared to prokaryotes.
Why post-translational modification of protein does not occur in prokaryotes?
Post-translational modifications of proteins do occur in prokaryotes, but they are generally less complex than in eukaryotes. Prokaryotes lack certain cellular compartments where modifications like glycosylation occur in eukaryotes. Additionally, prokaryotes have simpler metabolic pathways that may not require extensive post-translational modifications for protein function.
Which of these statements does not describe introns?
Non-expressed
Are there introns present in prokaryotes?
No, prokaryotes do not have introns in their genetic material.
Do prokaryotes have introns in their genetic material?
No, prokaryotes do not have introns in their genetic material.
Can prokaryotes remove introns during gene expression?
No, prokaryotes do not remove introns during gene expression.
Are introns present in prokaryotes?
No, introns are not present in prokaryotes. They are found in eukaryotic organisms, where they are removed during the process of gene expression.
What is is the main difference between prokaryotes and eukaryotes?
Prokaryotes doesnt have a membrane its organelles pretty much just float around unlike eukaryotes it contains a membrane where the organelles are kept proteinsynthesis in prokaryotes- it doesnt not contain "noncoding" meaning it doesnt have introns
Do mitochondria have introns?
Yes, mitochondria have introns. These introns are non-coding sequences found within the DNA of the mitochondria. They are typically removed during the process of RNA splicing to produce functional mitochondrial mRNA.
Does splicing occur in prokaryotes?
Yes, splicing does occur in prokaryotes. In prokaryotes, the process is known as group II intron splicing, which involves the removal of introns from RNA transcripts without the involvement of spliceosomes. Group II introns self-splice by forming a lariat structure and catalyzing their own removal from the RNA sequence.
How is the DNA in a prokaryote different from the DNA In the eukaryote?
DNA in prokaryotes is circular and in the cell itself, while the DNA of eukaryotes is coiled and in the nucleus (organelle) of the cell.
Does RNA have introns?
Yes, RNA does not have introns.
Do prokaryotic genes have introns?
No, prokaryotic genes do not have introns.
Why would a prokaryote fail to express a transplanted eukaryotic gene?
The biggest obstacle to expressing eukaryotic genes in prokaryotes is their structure. Eukaryotic genes have non-coding introns inserted between the coding exons, and these introns must be spliced out of the primary mRNA transcript before translation can proceed. The splicing is done by the spliceosome, a large, complex of RNA and protein. Prokaryotes do not have spliceosomes, thus eukaryotic genes would be transcribed with the introns intact, and translation by the ribosome would proceed on the primary mRNA transcript, resulting in non-functional proteins.
How is DNA in a prokaryote different than from DNA in a eukaryote?
DNA in prokaryotes is typically circular and exists as a single chromosome located in the nucleoid region, while eukaryotic DNA is linear and organized into multiple chromosomes housed within a membrane-bound nucleus. Additionally, prokaryotic DNA generally lacks introns and is not associated with histones, whereas eukaryotic DNA is associated with histones and often contains introns and exons. These structural differences reflect the complexity and organization of cellular processes in eukaryotes compared to prokaryotes.
