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
Vacuoles are responsible for one task in the cell?
solniwko [45]
I think that it is D
4 0
3 years ago
Which blood type can be transfused into a patient who has blood type A–?
larisa86 [58]
<span>The O Blood Which Is Also Called A Universal Donor

</span>
7 0
3 years ago
Read 2 more answers
Which form of government would have the MOST amount of citizen participation?
geniusboy [140]
ANSWER:

A. Democracy

Explanation:

A democracy would have the most amount of citizen participation because in this type of government members of society have equal access to political power through voting and elections

I hope I was helpful :)
8 0
3 years ago
Read 2 more answers
Consider the impacts on the bird population and its gene pool. __________ is responsible for gene flow and an important mechanis
GrogVix [38]
I would say immigration only.

emigration would theoretically reduce the genetic variation as unique individuals leave, but immigration would bring unique traits into circulation in an ecosystem.

I'm not super great at biogy tho so this might not be right... :)
8 0
3 years ago
Read 2 more answers
How many molecules of dna would result from one molecule after five cycles of pcra)10b)14c)5d)32
Sergio039 [100]

i say <u>D.) 32</u> is the answer.

5 0
3 years ago
Other questions:
  • Mrs. allen is pregnant. her baby's legs and arms have started to grow, and its intestinal system is beginning to develop. the ba
    10·1 answer
  • The energy pyramid below illustrates some feeding relationships in alpine meadows of Yellowstone National Park. Which statement
    7·1 answer
  • Painful swelling of one or both testes, commonly associated with mumps that develop after puberty - orchitisremoval of the fores
    14·1 answer
  • Why is damage to the heart more serious than damage to the liver ?
    7·1 answer
  • Due in 5 mins helps!!!!!
    13·1 answer
  • In gel electrophoresis, how is DNA cut into smaller pieces?
    7·1 answer
  • You connect an ammeter to a circuit. The ammeter shows you that there are 5 amperes of __________ in the circuit. What one word
    9·2 answers
  • What fibers are used in the manufacturing of rayon?
    7·1 answer
  • Human blood type is an example of which two types of genetics?
    8·1 answer
  • A tissue that provides strength and support for areas subjected to stresses from many directions is
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!