RNA synthesis is always 5' to 3' because: A. the unwinding of the double-stranded DNA can only move one direction B. the structu
re of ATP restricts 3' to 5' polymerization into RNA C. RNA synthesis can move in the 3' to 5' direction D. None of these E. nucleotides can only be added to an available 3'-OH group on the transcript terminus F. nitrogenous bases cannot pair up in the 3' to 5' direction
The correct answer is option E. "nucleotides can only be added to an available 3'-OH group on the transcript terminus".
Explanation:
RNA synthesis is catalyzed by an enzyme called RNA polymerase. RNA polymerase always catalyze the synthesis of new RNA from 5' to 3' because nucleotides can only be added to an available 3'-OH group on the transcript terminus. This has been confirmed in labeling experiments with γ-32P substrates which establish the presence of a triphosphate moiety in transcripts with either pppG or pppA.
The correct answer is: E) nucleotides can only be added to an available 3'-OH group on the transcript terminus.
Explanation:
RNA synthesis is a key process that happens in the nucleus and is important for the synthesis of proteins. In order to Transcription (the process in which a strand of RNA is synthesized from a specific gene) to occur, the enzyme RNA Polymerase is needed to catalyze it. However, this process has a particular way to operate, since the synthesis of the new RNA strand can only be from 5' to 3' because the nucleotides can only be added to an available 3'-OH group on the transcript terminus.
No energy would be produced for the cell since cellular respiration wouldn't occur. Proteins would not be made. All the organelles would bump into each other and they would not be held in place. ... Controls the cell's activities.
Option B. Rna polymerase provides a template for dna is the correct answer.
Explanation:
Messanger RNA is produced in the nucleus using the nucleotide sequence of DNA as a template. The messanger RNA needs nucleotide triphosphates for its production and is catalyzed by the enzyme RNA polymerase. Transcription is the process in which messanger RNA is produced from deoxyribonucleic acid (DNA).
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