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of the following stadeements is TRUE regarding the promoter sequence of a bacter

ID: 303093 • Letter: O

Question

of the following stadeements is TRUE regarding the promoter sequence of a bacterial at-35. D) Ahe premoter sequence is where RNA polymerase firnt binds 83. For A) exit from the nucleus Bacterial E) all of the above cuhafyrnsie elis which of the following is NOT required of the mRNA molecule before it can be used for translation? B) addition of a 3" poly A tail C) addition of a 3 cap D) addition of a 5' cap E) removal of introns 84. Which of the following performs RNA splicing in eukaryotic cellis? A) RNA polymerase B) spliceosome C) helicase E) none of the above 85. Which of the following statements is FALSE regarding transcription of a gene? A) RNA polymerase first binds to the promoter sequence of a gene B) The terminator sequence of a gene signals for the end of transcription. C) RNA polymerase reads the template DNA strand from 5' to 3 D) The RNA strand separates from the DNA template strand as it is being synthesized. E) Only one of the DNA strands serves as the template strand during transcription. 86. Regarding translation, which of the following occurs in prokaryotic cells, but NOT in eukaryotic cells? A) polyribosomes B) usage of a start codon C) translation that begins before transcription has finished D) usage of tRNAs E) usage of stop codons 87. Which of the following correctly describes the genetic code found in mRNA? A) triplet B) degenerate C) non-overlapping D) A and B E) all of the above

Explanation / Answer

Answer 82

All of the above

Because The sequence at -10 has the consensus sequence TATAAT.The sequence at -35 has the consensus sequence TTGACA. only by RNA polymerase promoter sequences are recognized

Answer 83

addition of a 3' poly A tail

because from enzymatic degradation in the cytoplasm it protects the mRNA molecule

Answer 84

spliceosomes.

Because RNA splicing is the removal of non-coding introns and the joining of exons by spliceosomes.

Answer 85

RNA polymerase read the template DNA strand from 5'to 3'

Because it read the template DNA strand from 3’ to 5’

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