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
tatiyna
2 years ago
6

How would transcription of the E. coli trp operon be affected by changing the two Trp codons in the leader peptide gene to His c

odons?
Biology
1 answer:
DIA [1.3K]2 years ago
7 0

Answer:

The attenuation system would respond more to histidine (His) than to tryptophan (Trp) levels

Explanation:

In genetics, the attenuation system refers to the process of control which is responsible for triggering premature termination of transcription in bacterial operons. In bacteria, the process of attenuation is characterized by the presence of an attenuator, which is a stop signal sequence found in the leader mRNA. The tryptophan (trp) operon, which is a cluster of genes responsible to encode the components required during the production of tryptophan, is controlled by the attenuation system. When there is a high tryptophan level, the ribosomes are able to translate an attenuator sequence, thereby resulting in termination of transcription. The attenuation system also controls the synthesis of other amino acids including histidine (His), phenylalanine (Phe) and threonine (Thr).

You might be interested in
Neurotransmitter molecules are stored in ______________.
Over [174]

In synaptic vesicles.

4 0
3 years ago
What are the benefits of using windmills or wind turbines as compared to burning fossil fuels?
atroni [7]
It'll be much cleaner for the environment. 
3 0
3 years ago
How do eukaryotic plant and animal cells differ from one another?
Ber [7]

Answer:

The eukaryotic plant animal cells are differ having some cell organelles in it.

Explanation:

The first difference is the cell wall, which is present in all eukaryotic plants. It gives shape and rigidity to the plants. But all the animal cell the outer covering is cell membrane. They lack cell wall.

All the plant cell have chlorophyll pigment. It helps them to photosynthesis. In animal cell, chlorophyll molecule are absent. So they depend on plants for their food.

The eukaryotic plant cell more space is occupied by the vacuoles. It stores food and water for the plants. However, animal cells have no vacuole or if present, it is very small in size.

All animal cells have lysosomes, which help in digestion of various materials in the cell. Plants does not contain lysosomes.

Besides this organelles all other structure of plant and animals are similar. They both have nucleus, DNA, cytoplasm, mitochondria, etc.

4 0
3 years ago
Cual es la unidad básica de por vida
VladimirAG [237]

Answer: Las células son las unidades de construcción más básicas de la vida. Todos los seres vivos están compuestos por células.

Explanation:

5 0
3 years ago
Changes in the gene pool can occur due to various mechanisms. From 1892 to 1954, millions of individuals emigrated (moved out) f
kherson [118]
<span>The mechanism that affected the gene pool of the immigrants that entered the United States through Ellis Island from 1892 to 1954 is B. gene flow. Gene flow is the transfer of genes or alleles from one population to another. The migration of millions of individuals from countries across the Atlantic Ocean to the United States is responsible for the changes in the gene pool of the immigrants.</span>
6 0
3 years ago
Read 2 more answers
Other questions:
  • 13. Which of the following statements about seafloor spreading is false?
    13·2 answers
  • Which one of the following terms best describes the period of the late 1920’s
    6·2 answers
  • Which scientific skill involves sharing what you have learned with others?
    12·2 answers
  • Primary sensory neurons:A.are the most abundant cells in the brainB.form connections only with other neuronsC.have neurites in t
    5·1 answer
  • A subducted plate melts forming ____? A) magma and volcanic mountains B) the lithosphere
    15·1 answer
  • How frequently do most coastal areas experience high tides? twice a day twice a month four times a day four times a month
    13·2 answers
  • What type of rock does the ocean floor consist of? Igneous basalt rock Igneous granite rock Sedimentary rock Metamorphic rock
    5·1 answer
  • Harmful or helpful, is considered to be the source for new alleles and a main contributor to the diversity of life on earth
    10·1 answer
  • Which of the following is a plant structure that is involved in asexual production?
    12·1 answer
  • Which evidence supports the theory of ocean floor spreading?
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!