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
Which of the following should be given to students before they begin a laboratory experiment?
ivanzaharov [21]
What followings ? You have no options for us to pick from.


8 0
3 years ago
Read 2 more answers
Coal _____. A.is a renewable energy source B.is made from inorganic material C.takes millions of years to form D.releases fewer
sesenic [268]
Your anwser is C. Hope i helped

7 0
3 years ago
Read 2 more answers
Refer to the regions A, B, C, and D shown on the U.S. map below.
LuckyWell [14K]

Answer:

from A to C

Explanation:

from A to C

8 0
2 years ago
Receptors that provide animals with information from the external environment are located in the _____.
Oksi-84 [34.3K]
Receptors which provide animals with information from the external environment are located in ears, tongue, eyes, and the nose. These are all receptors that can be found in our sensory organs and provide us with feedback from our nearby environment and the stimuli on which we should be alerted towards. 
5 0
3 years ago
Read 2 more answers
I need help on this please help
777dan777 [17]

dna, genes, animo, to acids

8 0
3 years ago
Other questions:
  • Cells are
    10·1 answer
  • Who discovered animal-like-protists?
    5·2 answers
  • What are the four codons for threonine
    14·1 answer
  • Ugh i need more help
    13·2 answers
  • How many earths could fit in the universe?
    11·1 answer
  • Inside the choloraplasts, chloropyll is found in the
    8·2 answers
  • If I lost 17,000 in a year how much did I make that year
    13·2 answers
  • Please help!! Not sure about this question. Is it A or B? I think it’s one of those two
    15·1 answer
  • What is the largest bone in the human body?​
    9·2 answers
  • A significant development in the twentieth century that has changed the notion of sex as reproduction to sex as pleasure is:____
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!