Questions: Select all that apply Not all mRNA molecules are equally stable; select all of the ways that this can affect gene regulation. The protein that an mRNA encodes may be destroyed. An mRNA molecule may be degraded before it is translated. An mRNA molecule may be degraded before it is transcribed. An mRNA molecule may persist long enough to be translated many times.

Select all that apply

Not all mRNA molecules are equally stable; select all of the ways that this can affect gene regulation.
The protein that an mRNA encodes may be destroyed.
An mRNA molecule may be degraded before it is translated.
An mRNA molecule may be degraded before it is transcribed.
An mRNA molecule may persist long enough to be translated many times.
Transcript text: Select all that apply Not all mRNA molecules are equally stable; select all of the ways that this can affect gene regulation. The protein that an mRNA encodes may be destroyed. An mRNA molecule may be degraded before it is translated. An mRNA molecule may be degraded before it is transcribed. An mRNA molecule may persist long enough to be translated many times.
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Solution

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The correct options are:

  • An mRNA molecule may be degraded before it is translated.
  • An mRNA molecule may persist long enough to be translated many times.

Explanation:

  1. The protein that an mRNA encodes may be destroyed.

    • Incorrect. This statement refers to protein stability, not mRNA stability.
  2. An mRNA molecule may be degraded before it is translated.

    • Correct. If an mRNA is unstable, it can be degraded before it is translated into protein, affecting gene regulation by reducing protein production.
  3. An mRNA molecule may be degraded before it is transcribed.

    • Incorrect. Transcription occurs before mRNA is produced, so mRNA cannot be degraded before it is transcribed.
  4. An mRNA molecule may persist long enough to be translated many times.

    • Correct. Stable mRNA can persist in the cell, allowing it to be translated multiple times, increasing protein production.

In summary, mRNA stability affects gene regulation by influencing how long an mRNA is available for translation, impacting protein synthesis levels.

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