Of MTRNA ,TRNA, MRNA , MTRNA , MIRNA ,INCRNA , and RNA ? Which ones are found in
ID: 273008 • Letter: O
Question
Of MTRNA ,TRNA, MRNA , MTRNA , MIRNA ,INCRNA , and RNA ? Which ones are found in prokaryoutes and which eukaryotic ? why or why ? which one would interrupt gene function ?
What is the effect of SNF and SWI binding to linker DNA ?down regulation , upregulation , blocked translation , expression , or transposition ? how does this system work ?
Why are operons not found in eukaroyitc cells and in prokaryotic? What are the functions ?
Where is it okay to have transpoons for example in introns and where are they not allowed .
Explanation / Answer
1) mtRNA - mitochondrial RNA is present in only eukaryotes. mtRNA is synthesized in Mitochondria. As prokaryotes doesn't have mitochondria they cannot synthesize mtRNA
tRNA - Is present in both prokaryotes and eukaryotes. tRNA is involved in translation (protein synthesis). Both prokaryotes and eukaryotes synthesize proteins through translation.
mRNA - Is present in both prokaryotes and eukaryotes. mRNA is transcribed from DNA. Both prokaryotes and eukaryotes has transcription machinery to synthesize mRNA which codes for protein.
miRNA - Is present in eukaryotes. miRNA majorly plays a role in regulation of gene expression
INCRNA - Is present in eukaryotes
RNA - Is synthesized in both prokaryotes and eukaryotes. Transcription is the fundamental process of all organisms to transfer information from DNA to RNA to protein.
2) miRNA and lncRNA interrupt gene function
3) What is the effect of SNF and SWI binding to linker DNA ?
Expression of genes
SWI/SNF complex is a nucleosome remodeling complex. It binds to chromatin and displaces/removes nucleosomes from chromatin. This is required for binding of DNA binding machinery to the naked DNA to regulate gene expression, replication, and other chromatin-associated processes.
4) Why are operons not found in eukaryotic cells and in prokaryotic?
In prokaryotes, multiple genes are transcribed to form single mRNA. Operons have multiple genes, which gets transcribed to synthesize single mRNA with multiple protein-coding RNAs.
In eukaryotes, each gene is made on individual mRNAs and each gene has its own promoter. Cells can't afford to waste energy making genes if they don't need them.
Operons contain regulatory sequences, which contain sites for binding of regulatory proteins required for the regulation of transcription.
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