5. Which of the following will happen if the cell has enough 6S RNA that would b

Question

5. Which of the following will happen if the cell has enough 6S RNA that would bind every molecule of sigma 70 in the cell?
A. The cell would die because of the collapse of the process of transcription
B. Genes normally transcribed during the log phase will no longer be transcribed
C. Genes normally transcribed in the stationary phase will no longer be transcribed
D. 6S RNA would bind sigma S and activate the sigmaS’ biological roles

sRNA

6. A sRNA hybridized with the leader of a mRNA overlapping the RBS of the mRNA. What will most likely happen next?
A. The mRNA will be destroyed by nucleases.
B. The mRNA will not be translated.
C. The rate of translation of the mRNA will be increase significantly.
D. The sRNA will be destroyed by nucleases.

Explanation / Answer

Ans 5: 6S RNA is a regulator of transcription in the stationary phase Therefore, the genes transcribed in the stationary phase is affected. So, the option C is correct.

Ans 6: SRNA a non coding RNA bind near the ribosome binding site (RBS) of the target mRNA and thus regulate it. So the option B is correct i.e. mRNA will not be translated.

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