Many proteins can be made from a single mRNA. Why then do cells transcribe many copies of the same mRNA?
What will be an ideal response?
RNA is not a stable molecule and mRNA may only last a few minutes in the cytoplasm before enzymes disassemble it. Therefore, by transcribing many copies of mRNA, translation can occur and protein synthesis levels can be continually adjusted.
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In terms of transcription regulation, the role of a helix-turn-helix is most similar to that of a(n) .
A. poly-A tail B. guanine cap C. sigma factor D. zinc finger
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____________________ Indicate whether the statement is true or false.
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