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
emmainna [20.7K]
3 years ago
11

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. owever, 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. What type of regulation does the trp operon exhibit?a. positive regulation b. protein modification c. negative regulation d. translational regulation
Biology
1 answer:
Setler79 [48]3 years ago
6 0

Answer:

The correct answer is - The tryptophan operon shows C. negative regulation.

Explanation:

Tryptophan is an amino acid, excessively synthesized by the organism, it regulates its transcription through “trp Operon.” In this operon, the corepressor of the tryptophan binds to the repressor protein and gets activated.

This activated repressor now binds to the operator site, and prevents the binding of RNA polymerase enzyme and inhibits the protein synthesis.

You might be interested in
The spinal cord is an ____ extending from the medulla of the brain down to the middle of the back
Bad White [126]
Long thin tubular bundle of nervous tissue and support cells
7 0
3 years ago
UV radiation can directly cause the DNA within cells to mutate, which may eventually lead to the formation of
luda_lava [24]

Answer:

UV radiation may cause negative regulators (tumor suppressors) to be under-expressed. UV radiation may cause positive regulators (oncogenic) to be over-expressed.

Explanation:

I found this on a quizlet. So credits to them- :)

6 0
3 years ago
In intramembranous ossification, newly formed bone that is immature and not well organized is called ______.
OleMash [197]

Answer:

Woven bone.

Explanation:

In intramembranous ossification, newly formed bone that is immature and not well organized is called woven bone. Osteoblasts are the type of cells that is responsible for the formation of new bone. These osteoblasts also come from the bone marrow and are related to structural cells. They have only one nucleus. The process of bone formation is called osteogenesis whereas there are three stages of bone development i.e. proliferation, maturation of matrix, and mineralization.

4 0
3 years ago
How many NEUTRONS does an element have if it’s atomic number is 44 and it’s mass number is 154 ?
krek1111 [17]

If the element has a atomic number of forty-four then the amount of neutrons would be "fifty-seven." This element is actually called Ruthenium and it has forty-four protons, and electrons, and it has fifty-seven neutrons and you can determine this by using this equation then solve:

44 + N = 101

= 57

Hope this helps!

6 0
3 years ago
La división meiótica produce ______________ células hijas haploides de cada célula diploide original. AYUDAAA
alisha [4.7K]

Answer:

El proceso general de meiosis produce cuatro células hijas a partir de una sola célula madre. Cada célula hija es haploide, porque tiene la mitad del número de cromosomas que la célula original.

Explanation:

Espero que esto te ayude :)

3 0
4 years ago
Other questions:
  • Which of the following is an appropriate hypothesis to answer the question why are leaves green
    6·1 answer
  • Recent studies indicate that coffee drinkers have a reduced incidence of symptoms of
    10·1 answer
  • In dna replication complementary base pairing occurs between
    14·1 answer
  • Which phrase best explains the many varieties of dogs at a dog show? A) cross pollination B) selective breeding C)survival of th
    9·1 answer
  • Can someone help me please
    6·2 answers
  • A symbiotic relationship in which one species benefits and the other is harmed is known as mutualism. predation. commensalism. p
    9·2 answers
  • Students carry out an experiment to test how white button mushrooms grow best. They begin with identical trays that contain stra
    6·1 answer
  • Are all nerve cells are connected to the brain?
    15·2 answers
  • A -tonic solution will cause water to flow out of a cell. What happens to a cell in this
    14·1 answer
  • Fertilizer often runs off fields to mix with surface water in a watershed What is another likely effect of fertilizer on surface
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!