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
GarryVolchara [31]
3 years ago
13

You experimentally change the DNA sequence directly upstream of a start codon of an operon in E coli to investigate the function

of this region of DNA. Analysis reveals that after the change the same amount of mRNA is made from the operon, but there are very few proteins made from the operon. What is the most likely function of the DNA sequence that you changed?
Biology
1 answer:
Phoenix [80]3 years ago
8 0

Answer:

Mutation occurred in ribosome binding site that serves as binding site for 30S ribosomal subunit of <em>E. coli</em> and allows the process of protein synthesis to begin.

Explanation:

The initiation of protein synthesis in bacteria requires binding of the ribosome to the ribosome binding site. The ribosome binding site in bacteria consists of the initiation codon "AUG" and the preceding Shine-Dalgarno sequence. The AUG initiation codon and Shine Delgrano sequence are around 10 bases apart.

The sequence is polypurine hexamer and is represented by 5' ...AGGAGG...3'. Shine-Delgrano sequence is complementary to the conserved sequence present at the 3' end of 16SrRNA of the 30S subunit of the bacterial ribosome. Binding of Shine Delgrano sequence of ribosome binding site and the complementary sequence of the 30S ribosomal subunit marks the first step in the initiation of protein synthesis.

Any mutation in the ribosome binding site would not allow the process of protein synthesis to start or would reduce the rate of the initiation of protein synthesis.

You might be interested in
This is a scaffolding of protein fibers that help a cell keep its shape, and assist cell division and cell movement.
Schach [20]
The answer is tissue. Hope this helped!
6 0
3 years ago
Read 2 more answers
A swimmer sprints a short distance for a competition, the swimmer is not able to take in enough oxygen to make the ATP needed fo
OverLord2011 [107]

A swimmer sprints a short distance for competition. The swimmer is not able to take in enough oxygen to make the ATP needed for the sprint. Which of the following processes is most likely going to occur in the swimmer's muscle cells during the competition? (2 points)

A. Aerobic respiration would continue until oxygen is no longer available, leading to cell death.

B. Aerobic respiration will continue to make the same amount of ATP since oxygen is not required.

C. Anaerobic respiration would be used to produce small amounts of ATP in the absence of oxygen.

D. Anaerobic respiration will produce more ATP than the process used in the presence of oxygen.

<u>Answer:</u>

A swimmer sprints a short distance for competition. The swimmer is not able to take in enough oxygen to make the ATP needed for the sprint. Anaerobic respiration would be used to produce small amounts of ATP in the absence of oxygen and it is the process happens in the swimmer's muscle cells during competition.

<u>Explanation:</u>

  • A Swimming sprinter will spend his maximum energy while to cover a short distance in his competition. Quickly he will reduce his oxygen level.
  • Oxygen will produce an ATP molecule (Adenosine Triphosphate) which is required for a sprinter.
  • The ATP molecule will produce energy for the cells. Aerobic respiration takes place only when in the presence of oxygen.
  • While swimming they will not get enough oxygen so the Anaerobic respiration takes place to produce ATP molecule.

7 0
3 years ago
An error sometimes made by beginning biology students is called the "Adaptationist Fallacy" wherin a trait observed in a populat
aleksley [76]

Answer:

The Adaptationist Fallacy can prove very costly to biologist who are assuming it wrong according to the function in the environment. Let us have an example of the phenotype of wheat diploid breed that produces non-bearded grains variety, but we cannot assume it as a beneficial phenotype without further extensive research. After research, we came to know that there is also a major hexaploid bearded variety, that produces more number of grains. That's how, the Adaptationist Fallacy may prove fatal if we have assumed diploid as a major beneficial phenotype.

4 0
2 years ago
Darwin was offered a position on the _________________ whose mission was to survey the waters around South America.
Arte-miy333 [17]

The correct answer is the ship beagle I think I spelled that right

6 0
3 years ago
Seismologists inge lehamann studied earthquakes. Which layer of earth did she predict to be solid after observing the motion of
arsen [322]

Inner core  was found to be solid after observing the motion of P waves.

Explanation:

Seismologist Inge Lehmann, studied the seismic waves of an earthquake and discovered about inner core in the mantle layer of Earth. She States that there is a boundary of discontinuity between the outer and inner core of Earth.

She studied the travel of secondary and primary waves during an earthquake and how it flows at different shells of Earth's layer which helped her in finding about the inner core of mantle. She observed that the inner core is a solid layer inside the molten layer of outer core

7 0
3 years ago
Other questions:
  • I NEED HELP ASAP (WILL MARK BRAINLIEST IF ITS THE RIGHT ANSWER) which of the following describes asexual reproduction
    9·2 answers
  • Which organism is the peacock most closely related to?
    12·2 answers
  • During a party, Michael was talking to a friend about the symbolism involved in a recent movie. Michael attributed the explanati
    7·2 answers
  • Some tools have various levels of graduations. For example, a ruler may have graduations for both millimeters and centimeters. W
    13·2 answers
  • Mosquitoes are classic examples of
    11·1 answer
  • I NEED HELP WITH THIS QUESTION ABOVE!!
    11·1 answer
  • Quickly answer!!
    10·1 answer
  • How does fossil fuel use affect the climate
    7·1 answer
  • Fill out the science problem
    10·1 answer
  • Which statements summarize absolute and relative age?
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!