Answer:
The ability of sequences within the leader mRNA to pair with one another and form stem-lopp structures
Explanation:
A form of feedback regulation controls the trp operon by regulating transcription termination, a mechanism referred to as Attenuation.
-In the presence of high concentrations of tryptophan, RNA polymerase ceases transcription shortly after initiation in a region called the leader sequence.
-If the concentration of tryptophan is low, transcription does not terminate until the entire operon is transcribed. The mechanism of attenuation links alternative RNA secondary structures to transcription termination.
-Immediately after transcription, RNA from the leader region folds into one of two alternative secondary structures.
-One of these structures is a transcription termination signal that stops RNA polymerase from continuing to the end of the operon.
-The alternative structure does not contain a transcription termination signal and allows transcription of a single mRNA that encodes all the structural genes.
-The decision as to which of the two alternative RNA structures formed is regulated by the concentration of tryptophan.
Educate the general public about activities that can lead to the spread of invasive species.
The statement that best describes the dust gas and celestial bodies of the Milky Way galaxy is that -<u>They orbit around the center of the galaxy because of gravity.</u>
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Explanation:
- <u>The Milky way is referred to as a spiral galaxy ,our sun,and all the planets are a part of this galaxy.</u>
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- <u>A galaxy is often said to be a large group of dust gas and celestial body (i.e nebula, stars, comets, meteors, asteroids, and planets.) bounded together with gravity.</u>
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So we can say that the statement that best describes the dust gas and celestial bodies of the Milky Way galaxy is that -<u>They orbit around the center of the galaxy because of gravity.</u>
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The level of phospholipid organzation to arrange themselves into to parallel layers.