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uysha [10]
3 years ago
12

How to be good at biology?

Biology
1 answer:
tresset_1 [31]3 years ago
7 0
Study and read dont just guess
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Which of the following features of the trp operon is most essential to the process of attenuation independent of the repressor p
diamong [38]

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.

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Which steps will help prevent the introduction of invasive species into an area?
Vlad1618 [11]
Educate the general public about activities that can lead to the spread of invasive species.
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Which of the following best describes the dust gas and celestial bodies of the Milky Way galaxy
Gnesinka [82]

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>

<u />

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>
  • <u />
  • <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>

.

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>

<u />

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What level of organization is a phospholipid?
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The level of phospholipid organzation to arrange themselves into to parallel layers.

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Please help im rlly stuck
Oduvanchick [21]

Answer:

c

Explanation:

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