A cell has become highly differentiated to perform a specialize function for the tissue in which it resides. To that end, more than 80% of the protein is of one type (for example, protein X). Which of the following is most likely true in this situation?Group of answer choicesThe mRNA that directed the synthesis of protein X is in the high abundance category.Protein X is expressed by the cell only during mitosis.The mRNA that directed the synthesis of protein X is in the low or very low abundance category.The gene for protein X has no introns.The mRNA for protein X was transcribed by RNA polymerase III.
Question
A cell has become highly differentiated to perform a specialize function for the tissue in which it resides. To that end, more than 80% of the protein is of one type (for example, protein X). Which of the following is most likely true in this situation?Group of answer choicesThe mRNA that directed the synthesis of protein X is in the high abundance category.Protein X is expressed by the cell only during mitosis.The mRNA that directed the synthesis of protein X is in the low or very low abundance category.The gene for protein X has no introns.The mRNA for protein X was transcribed by RNA polymerase III.
Solution
The most likely true statement in this situation is: The mRNA that directed the synthesis of protein X is in the high abundance category.
Here's why:
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The cell has become highly specialized and is producing a large amount of a specific protein (protein X).
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The production of a specific protein is directed by the corresponding mRNA molecule.
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Therefore, if a large amount of protein X is being produced, it suggests that the mRNA directing its synthesis is also present in large amounts.
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This would place the mRNA for protein X in the high abundance category.
The other options are less likely because:
- Protein expression is not limited to mitosis.
- The abundance of mRNA is not related to the presence of introns in the gene.
- mRNA is typically transcribed by RNA polymerase II, not III.
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