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
What is the macromolecule consists of?
liberstina [14]
They are typically composed of thousands of atoms or more. The most common macromolecules in biochemistry are biopolymers nucleic acids, proteins, carbohydrates and lipids and large non-polymeric molecules such as lipids and macrocycles
7 0
3 years ago
25Pts. Will give Brainliest if correct!
Natali5045456 [20]

Answer:

The populations are isolated and thus do not interbreed.

Explanation:

7 0
3 years ago
Read 2 more answers
Your client has been diagnosed with genital warts. Which of the following medications would you anticipate being ordered?
snow_lady [41]

Answer:

Options are not given but mostly Interferon alfa-2b is the medication that is given as medication against genital warts.

Explanation:

Genital warts are generally transferred sexually usually by some members of Human papillomavirus(HPV). Genital warts can be painful and itchy. It can disappear on its own over time but the virus can be present even after it disappears.

The approved and widely used medication for genital wart is interferon alfa-2b. Interferon alfa-2b has immunomodulatory and antiviral property which helps in eradicating the virus that cause genital warts. It boosts the immune system. So the correct answer is interferon alfa-2b.

5 0
3 years ago
Which government agency would you expect to be most concerned with the impacts of pollution?
vampirchik [111]

Probably the U.S. Environmental Protection Agency also known as the EPA.  They are charged with protecting people and the environment by enforcing regulations that prevent pollution.  If they find any violation committed they can impose sanctions and fines as well as imprisonment depending on the nature of the offense.

4 0
3 years ago
Please help me, I don't understand this
mihalych1998 [28]

Answer:

4, based on the assumption that the R allele is dominant over the r allele, and that the T allele is dominant over the t allele.

Explanation:

Any bush with a dominant petal color allele (R) will have red petals. This includes Rr and RR.

Any bush with a dominant bush size allele (T) will have a tall bush. This includes Tt and TT.

The only way to acquire a short bush or pink petals is to have two recessive alleles together (tt, rr).

RRTT, RrTT, RRTt, and RrTt -> red petals with tall bushes

RRtt, Rrtt -> Red petals with short bushes

rrTt, rrTT -> pink petals and tall bushes

rrtt-> pink petals with short bushes.

These are the four phenotype variations possible in this dihybrid cross.

4 0
3 years ago
Other questions:
  • 8) What four elements make up 96% of the human body's mass?
    7·1 answer
  • During which stage of interphase does the cell make additional proteins and organelles in its last preparations for cell divisio
    10·1 answer
  • A woman with a waist measurement of more than _______ inches or a man with a waist measurement of _______ inches is at higher ri
    8·1 answer
  • Which of the following is a characteristic of lipids?(Choice A)AThey are composed of nitrogenous chains.(Choice B)BThey are not
    6·2 answers
  • Which factors changed throughout the experiment? Check all that apply.
    9·1 answer
  • What are the possible phenotypes of chicken offspring if one parent has black feathers ( FB ) and one parent has white feathers
    15·1 answer
  • J.J. Thomson's Plum Pudding Model is an example of _____. A. a picture B. an analogy C. a prototype D. a mathematical model
    11·1 answer
  • Septa are..
    9·1 answer
  • Bacteria can reproduce by exchanging DNA. This exchange is called:
    9·1 answer
  • All of the following are diseases caused by viruses except:
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!