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
attashe74 [19]
3 years ago
7

Tryptophan is an amino acid necessary for E. coli survival and growth. E. coli contain genes coding for enzymes that synthesize

tryptophan. These genes are grouped together on a segment of DNA called the tryptophan (trp) operon. Cells can use these enzymes to synthesize tryptophan when it is not present in the environment. However, when tryptophan is already present in the environment, cellular resources are shifted away from manufacturing the enzymes for tryptophan synthesis. Tryptophan binds with and activates the trp repressor, which then binds to the trp promoter and blocks RNA polymerase. Blocking RNA polymerase decreases the normal transcription rate of the operon. The tryptophan (trp) operon consists of a promoter, an operator, and 5 trp genes. What type of regulation does the trp operon exhibit? protein modification positive regulation negative regulation translational regulation
Biology
1 answer:
jasenka [17]3 years ago
3 0

Answer:

Negative regulation

Explanation:

In the trp operon, tryptophan binds to the repressor protein, then this complex binds to operator effectively blocking gene transcription preventing the production of enzymes that aids in the synthesis of tryptophan. This happens when high levels of tryptophan is detected. This, it is a  repressible/negative type of regulation.

You might be interested in
Large multicellular organisms are made of a wide variety of cell types. Do
Murrr4er [49]

Answer:

Yes, All of the cells divide at approximately the same rate, although they may divide at different times

7 0
3 years ago
What day is considered to be the first day of a female’s reproductive cycle?
san4es73 [151]

Answer:

This is usually the first day of menstruation - the day when the uterus lining starts to be shed.

Explanation:

8 0
2 years ago
A nurse who has been caring for a pregnant client understands that the client has pica and has been regularly consuming soil. fo
gregori [183]
She should be monitored for anemia

7 0
3 years ago
Camille and her friends enjoy experimenting with different foods. During a camping trip, they decide to fry bacon using nothing
natima [27]
<span>The two sentences that accurately describe the girls' experience with heat transfer are "Camille heats a rock in the campfire for 30 minutes, and then removes it with tongs. She greases the rock and lays the bacon strips directly on it." By heating the rocks in the campfire and laying the bacon on the rocks, the girls transferred the heat from the fire to the rocks, and the heat from the rocks to cook the bacon.</span>
7 0
3 years ago
Read 2 more answers
For questions 20-21, Consider the autosomal recessive pedigree to the right. ⦁ What is the genotype of the first individual in g
serg [7]

Answer:

I need to see an image of the pedigree

3 0
2 years ago
Other questions:
  • What are two ways that genotype and phenotype are alike
    5·1 answer
  • BRAINLIESTT ASAPPPP!!
    14·2 answers
  • Describe each of the two paths viruses may follow once they have entered a cell.
    7·1 answer
  • Women often cite ___________ as a key cause or precipitating context of spousal abuse.
    7·2 answers
  • Select all that apply.
    8·2 answers
  • In a model of an atom, where would I find a valence electron?
    9·1 answer
  • This feature of the prokaryotic cell helps the cell to stick to surfaces.
    5·2 answers
  • Organisms at the
    15·1 answer
  • All of the following affect the climate of an area except
    5·2 answers
  • Why are there more people with sickle cell disease in one part of the world than in other parts?
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!