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
DNA fragments form during DNA replication due to the discontinuous nature of replication on the lagging strand. DNA fragments ca
asambeis [7]

DNA polymerase

Explanation:

I did it on USAtest prep

6 0
3 years ago
Determine which of the three
prohojiy [21]

Answer: North America

Explanation: About 80 million years ago, North America and Europe, Australia and Antarctica, and India and Madagascar followed suit and separated. Over millions more years, the continents moved to their approximate current positions.

7 0
2 years ago
The first of every species name is?
PilotLPTM [1.2K]
Mammal I’m not sure sorryyyy
8 0
2 years ago
Explain how carbon, hydrogen, and oxygen are conserved as<br> they move through the ecosystem.
madreJ [45]
They move through the ecosystem
8 0
3 years ago
What were some recent events where scientific facts were changing??
kiruha [24]

The recent events where scientific facts were changing our new discoveries on the moon and the new species of early humans have been discovered.

<h3>What are scientific facts?</h3>

Scientific facts are those facts that are based on scientific theories and experiments. These facts are true, and they came from organized and systematic knowledge.

Scientific facts were always changing s new discoveries happen. Scientist discovers new things every day.

Thus, the recent events are new discoveries on the moon, flying, and land in the martian area. A new species of early humans have been discovered.

To learn more about scientific facts, refer to the link:

brainly.com/question/23206660

#SPJ1

6 0
1 year ago
Other questions:
  • A blank is an example of a prokaryotic cell
    9·2 answers
  • The nurse researcher is conducting research on the effect of homelessness on how often a woman performs self-breast examinations
    10·1 answer
  • Which phrase describes organisms that formed index fossils?
    12·2 answers
  • who is responsible for the chromosome theory, which says that genes of inheritance are in specific locations on a chromosome
    5·1 answer
  • Where on Earth did life begin and what were the special conditions needed?
    12·1 answer
  • In a simple synapse, neurotransmitter chemicals are received by? In a simple synapse, neurotransmitter chemicals are received by
    6·1 answer
  • Organelles and the Characteristics of Life:
    10·1 answer
  • What variety of moth increased over the ten year period
    9·1 answer
  • Doctors found out that you are suffering from a serious disease that can only be cured using stem cell therapy. The doctors expl
    11·1 answer
  • How many teaspoons does it take to get 9 table spoons?
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!