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
Oksi-84 [34.3K]
3 years ago
13

Prior to its export from the nucleus, what modifications must be made to a mRNA molecule in eukaryotic cells?

Biology
1 answer:
mamaluj [8]3 years ago
8 0

Answer: Option A

Explanation:

Before the mRNA which has been processed from DNA is taken and transported to the ribosomes in the cytoplasm for the translation process, some modifications are made to the mRNA before transport. This includes

1. Capping: addition of 5'-5' phosphate bonds to the 5' terminus of the mRNA. Forms the cap structure that is essentials for binding to ribosomes via special proteins attached to the cap structure

2. Addition of poly(A) tail: a poly(A) addition signal (AAUAAA) is attached to the 3' terminus of the mRNA. They are important in translation initiation and degradation prevention

3. Splicing: this is likely the most remarkable processing in eukaryotes. It involves the removal of intron regions by excision from the present-mRNA and then ligating the exon regions together giving rise to the mRNA.

You might be interested in
What is Anopheles mosquitoes?
Leno4ka [110]

Anopheles is a genus of mosquito first described and named by J. W. Meigen in 1818. About 460 species are recognised; while over 100 can transmit human malaria, only 30–40 commonly transmit parasites of the genus Plasmodium, which cause malaria in humans in endemic areas.

8 0
3 years ago
Try to explain with your words what is Osmosis.
vodomira [7]
When molecules of a solvent pass through a semi-permeable membrane from a low concentrated solution to a higher concentrated solution.
6 0
3 years ago
Read 2 more answers
Surgical removal of the thyroid gland is the treatment of choice for thyroid cancer. during the immediate postoperative period,
mamaluj [8]
According to my research, it's calcium
3 0
3 years ago
Which of the following is not a main characteristic of a mineral?
ladessa [460]
The answer is A. Man-made
3 0
2 years ago
Why is there a gap or synapse between the nerve endings why can't itbe joined to the other nerve?
MariettaO [177]
In any imbalance of nerve endings are very important people can die <span>for it is very sensitive nerve endings</span>
3 0
3 years ago
Other questions:
  • What is the role of scientific research in solving human health problems
    9·1 answer
  • The chaparral biome has adapted to suppress wildfires. Please select the best answer from the choices provided
    6·2 answers
  • Female reproductive cells orneggs are produced by which structure in a flowering plant
    9·1 answer
  • Winds always blow from ________ pressure toward _______ pressure, and they curve because of the _______ effect.
    7·2 answers
  • design a bacterium that will be genetically engineered. describe what it will do and how it will help the environment
    7·1 answer
  • What is the main advantage to organisms that reproduce sexually is?
    9·1 answer
  • DNA structure diagram
    5·1 answer
  • Is squids shooting out ink behavioral adaptation?
    7·2 answers
  • Abiotic factors in an ecosystem might include one or more of the following:
    8·1 answer
  • Use what you know about fossils to choose the correct answers from the drop-down menus to complete each
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!