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 the porosity of the gravel sample?(The sediment volume for each sample is 400ml.)
pishuonlain [190]

B is your answer. God Bless hope this helps

8 0
3 years ago
Read 2 more answers
What characteristic of water causes water to stick to the side of a test tube?
bazaltina [42]

Answer:

The characteristic of water that makes this liquid stick to the side of a test tube is called capillarity (Claim).

Explanation:

Water (H₂O) is a polar molecule with the ability to generate van der Waals forces, which is explained by the 4 hydrogen bonds it forms to bind to other substances. The consequence of the forces of the molecular bonds are four properties of H₂O, including surface tension, cohesion, adhesion and capillarity.

- <u>Claim</u>: The characteristic of water that makes this liquid stick to the side of a test tube is called capillarity.

- <u>Evidence</u>: Cohesion and adhesion of water are properties that come from the forces of the molecular bonds of water, and whose effect is the ability of water to wet surfaces and adhere to a tube that contains it, the latter due to capillarity. Capillarity also allows water to rise through the roots and stems of plants, through their thin vascular ducts.

- <u>Reasoning</u>: <u>cohesion</u> in water depends on the force of attraction between H₂O molecules, <u>adhesion</u> is the capacity of H₂O molecules to join other different molecules and —together with <u>surface tension</u>— make H₂O molecules close to the walls of a glass tube adhere to it, which represents capillarity.

The effect of capillarity is more evident when the test tube is of a smaller diameter, although capillarity and adhesion to its walls always exist, and to a greater degree than any other substance.

8 0
3 years ago
Use the following chart to find the meaning of prokaryote.
kobusy [5.1K]

D. before cells without a true nucleus

6 0
3 years ago
Read 2 more answers
which statement differentiates sensory neurons and motor neurons? sensory neurons are found in the brain; motor neurons are foun
azamat
Sensory neurons and motor neurons are only two of the basic types of neurons. The basic function of neurons are in transmitting nerve impulses to the different parts of our body. Sensory neurons<span> carry signals from peripheral parts of our body into the central nervous system. On the other hand, m</span>otor neurons<span> carry impulses from the central nervous system to the peripheral parts of our body.

Best answer: </span><span>sensory neurons carry stimuli information to the brain; motor neurons carry processed information to muscles and glands. </span>
6 0
3 years ago
Read 2 more answers
What is the most important reason for studying soil structure​
ziro4ka [17]

"A good soil structure is important to allow air and water into the soil which are vital for healthy plant growth. It will improve drainage and reduce soil erosion caused by excess surface run-off."

https://www.rolawn.co.uk/soil-structure

8 0
3 years ago
Other questions:
  • Which is not part of an organisms environment
    8·1 answer
  • The first visible signs of senescence are usually observed in a person's ___
    12·2 answers
  • (getting the right answer will result in 99 points) A substance that influences the reaction but does not participate in the rea
    6·2 answers
  • Are there more millimeters or more centimeters in the length of a computer screen?
    6·2 answers
  • Al of the following are light colored fish except a. swordfish b. catfish c. sole d. shrimp
    6·1 answer
  • mary’s friend observes the investigation and claims that block b has more more mass. if there was no errors in this investigatio
    13·1 answer
  • Is amoeba made up of a single cell or is it a cell itself??
    15·2 answers
  • Which of the following kinds of cells perform basic functiona as obtaining energy from food
    5·1 answer
  • What does each letter in the acronym F.O.I.L. stand for?<br> F<br> O<br> I<br> L
    7·2 answers
  • What proportion of people who are infected with polio develop neurological problems?
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!