Which of the following statements is true? In eukaryotes, transcription and tran

Question

Which of the following statements is true? In eukaryotes, transcription and translation are coupled (meaning translation starts before transcription is complete). alpha-amanitin blocks all transcription in human cells 5' mRNA cap and 3' poly(A) tail increase stability of pol II transcribed mRNAs in bacteria Introns starts with a GU sequence and end with an AG sequence Branchpoint adenosine provides the crucial 2' H (deoxy) group for the first step of pre-mRNA splicing All genes in humans make only one mRNA and one protein rRNAs have a cap at the 5' end and poly(A) tail at the 3' end tRNAs are transcribed by pol II in humans or eukaryotes RNA exonucleases are absent in humans but present in bacteria

Explanation / Answer

wrong options are

Transcription and translation is coupled in Prokaryotes, not in eukaryotes

alpha-amanitin blocks only RNA polymerase II activity which transcribe mRNA

bacteria doesn't have 5' mRNA cap

introns starts with GU sequence and ends with AG sequence

3' OH of adenosine provide branch point for pre-mRNA splicing

not all genes codes for one protein. different antibodies are formed from the same mRNA different splicing

rRNA doesn't have 5'cap

tRNA is transcribed by RNA polymerase III

RNA exonuclease is present in eukaryotes

So the answer is introns starts with GU sequence and ends with AG sequence

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