1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
lana66690 [7]
3 years ago
6

Which of the following features of the trp operon is most essential to the process of attenuation independent of the repressor p

rotein?
The order of the structural genes, E, D, C, B, A
Allosteric modifications as a result of tryptophan binding.
The operator sequence (trpO)
The ability of sequences within the leader mRNA to pair with one another and form stem-lopp structures
Biology
1 answer:
diamong [38]3 years ago
4 0

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.

You might be interested in
You shoot a deer. you do not see it go down. how long should you wait before trailing the deer? half an hour two hours half a da
svp [43]
You should wait at least half an hour before trailing the deer. You should try to watch carefully and see which way it goes. Chasing a wounded animal yields meat that tastes gamey, so try not to chase. When you do trail, follow the blood trail. Listen carefully while you wait and try to hear where the deer is or if it goes down. 
7 0
3 years ago
Which component of the earth's atmosphere is decreased due to photosynthesis?
Kobotan [32]
It would be Carbon Dioxide.
4 0
3 years ago
Both the heart and arteries contract to pump blood throughout the body. Please select the best answer from the choices provided.
rosijanka [135]

The heart and the arteries of a person, both contracts to pump the blood throughout the body. The aorta, which is the largest artery of the human body, pumps the blood from the heart to the entire body of a person. The oxygen-rich blood is pumped out of the left ventricle when its contraction into the aorta, from where it is transported to the whole body.

Hence, the given statement is true.

6 0
3 years ago
Read 2 more answers
During transcription __ is converted to __
Darina [25.2K]

Answer:

DNA  is converted into RNA

Explanation:

hope i helped you

5 0
3 years ago
Oxygen has six electrons in its outer shell. As a result, oxygen can form up to _____ bonds with other elements.
Pie
The answer is 2 bonds
6 0
3 years ago
Other questions:
  • What happens in metaphase 1 in meiosis
    5·2 answers
  • Which of the following best describes what happens when the ATP synthase
    13·2 answers
  • What happens when the endocrine system malfunctions?
    14·1 answer
  • Why do you need starch in your diet
    10·2 answers
  • What do you see when you look througha polarizing camera
    5·1 answer
  • Diferentiate between interphase and M phase​
    12·1 answer
  • What is the name of this chemical reaction?
    9·1 answer
  • If you had to explain the parts of an animal cell to your younger cousin, what comparison or example could you use for the cell
    14·1 answer
  • Analyze the graph with a partner. How many mass extinctions did you identify? How did you determine when they occurred?
    9·1 answer
  • A child holds a red ball. Why does the ball look red?
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!