Questions: RNA METABOLISM Question 12 ( 1.5 points) What is the name given to the portions of eukaryotic mRNA sequence that are removed during RNA processing? exons caps poly - A tails introns GENE EXPRESSION Question 13 ( 1.5 points) Control of gene expression in eukaryotic cells occurs at which level(s)? only the transcriptional level

RNA METABOLISM Question 12 ( 1.5 points) What is the name given to the portions of eukaryotic mRNA sequence that are removed during RNA processing? exons caps poly - A tails introns GENE EXPRESSION Question 13 ( 1.5 points) Control of gene expression in eukaryotic cells occurs at which level(s)? only the transcriptional level
Transcript text: RNA METABOLISM Question 12 ( 1.5 points) What is the name given to the portions of eukaryotic mRNA sequence that are removed during RNA processing? exons caps poly - A tails introns GENE EXPRESSION Question 13 ( 1.5 points) Control of gene expression in eukaryotic cells occurs at which level(s)? only the transcriptional level
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Solution

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The answer to Question 12 is the fourth one: introns.

Explanation for each option:

  • Exons: These are the portions of eukaryotic mRNA that are retained and expressed after RNA processing. They are not removed.
  • Caps: This refers to the 5' cap added to the mRNA, which is not removed during RNA processing.
  • Poly-A tails: This is a sequence of adenine nucleotides added to the 3' end of the mRNA, which is not removed during RNA processing.
  • Introns: These are the non-coding regions of eukaryotic mRNA that are removed during RNA processing.

For Question 13, the control of gene expression in eukaryotic cells occurs at multiple levels, including transcriptional, post-transcriptional, translational, and post-translational levels. Therefore, the statement "only the transcriptional level" is incorrect.

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