Which three statements correctly describe the processing that takes place before a mature mRNA exits the nucleus?
A. Noncoding sequences called introns are spliced out by molecular complexes called spliceosomes.
B. A translation stop codon is added at the 3' end of the pre-mRNA.
C. A cap consisting of a modified guanine nucleotide is added to the 5' end of the pre-mRNA.
D. A poly-A tail (50-250 adenine nucleotides) is added to the 3' end of the pre-mRNA.
E. Coding sequences called exons are spliced out by ribosomes.

Answers

Answer 1

The processing that takes place before a mature mRNA exits the nucleus,

A translation stop codon is introduced to the pre-mRNA's 3' end.

c. The 3' end of the pre-mRNA gets a poly-A tail (50–250 adenine nucleotides) attached to it.

d. Ribosomes splice out coding segments referred to as exons.

In eukaryotes, RNA must leave the nucleus through the nuclear membrane's pores and reach the cytoplasm to undergo translation during protein synthesis. The 3' Poly-A tail, 5' capping, and pre-mRNA splicing are the mRNA's departure mechanisms.The 5'capping procedure involves adding a 7-methylguanosine cap through phosphate linkage to the 5' end of the mRNA. This procedure helps to start translation processes and prevents mRNA degradation.

The cleaving of pre-mRNA and attachment of about 200 A nucleotides, or the 3'poly (A) tail, to the mRNA by the poly (A) polymerase enzyme protein complex is known as the 3' Poly-A tail step. This facilitates the transfer of mRNA to the cytoplasm, stops pre-mRNA degradation, and starts translation.

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Related Questions

WILL GIVE BRAINLY!!!

If a one strand of a DNA molecule reads ATCCGACCAGCTA, what will its complementary DNA strand look like?

A. TAGGCTGGTCGAT
B. UAGGCUGGUCGAU
C. ATCCGACCAGCTA
D. GCTTAATTGGCTG

Answers

Answer: A

Explanation:

A goes with T and G goes with C

Remember with this song:

Apples go in trees, Cars in the garage

Which one the following is the most stable?​

Answers

Answer:

plz tell which is your following

Whodunnit?
Six contestants on a reality TV show were stunned to find their lowest scoring colleague was "injured." They
must figure out the crime before the bell rings. The question is Whodunnit? And how... The Player, Last
Known Whereabouts and Method that are left unaccounted for -- is the solution.

Answers

The file above is a scam file

Answer: No, it's not a scam file. Got it in my science class

Explanation:

Ollie runs 40 meters in 5 seconds. How far could she run in 60 seconds?

Answers

Answer:

60 seconds would be 480 meters

Explanation:

we can find the answer by using the method of distribution, but first take the 60 seconds and divide by 5 seconds and we'll get 12 then multiply that by 40 meters to get 480 meters and since we divided 60 seconds by 5 the was how we figured out what to multiply the 40 meters to.

What’s the answer????

Answers

2nd answer ecological succession .. don't know about the first one

why is there only one winter and summer a year​

Answers

The earth got hit by a meteor billions of years ago and now it sits on an axis

How do electric charges behave?

Answers

The protons are positively charged, the electrons are negatively charged, and the neutrons are neutral.Opposite charges attract each other (negative to positive). Like charges repel each other (positive to positive or negative to negative).

Which adaptation would most likely help a plant collect more energy for photosynthesis? A. Broad leaves B. Short stems C. Deep roots D. Large flowers SCIENCE

Answers

Holes also allow more sunlight to get through to the leaves below, which maximizes sun absorption and photosynthesis. Adaptation: During the heat of the day's sunlight, most plants open stomata (pores) in their leaves to take in carbon dioxide from the air for photosynthesis, while allowing some water to escape.

hope that helps.

How might the effectiveness of nectar change if it had a bitter taste?

Answers

i don’t think it would change the effectiveness , if bees got used to it or it had always been like that, they wouldn’t have a problem, but if it was a sudden change then they might dislike it

Answer:

Floral nectar is offered by plants to animals as a reward for pollination. While nectar is typically a clear liquid containing sugar and trace amounts of amino acids, colored nectar has evolved in several plant families. Here we explore the functional significance of the phenolic compounds that impart a dark brown color to the nectar of the South African succulent shrub Aloe vryheidensis. Flowers of this aloe are visited.

Explanation:

Hope this helps

GIVING BRAINLIEST!!!!!!!!!!

How does the stomach function??

Answers

Answer:

The stomach has 3 main functions: temporary storage for food, which passes from the esophagus to the stomach where it is held for 2 hours or longer. mixing and breakdown of food by contraction and relaxation of the muscle layers in the stomach. digestion of food.Explanation:

you could have just looked it up

Select the correct answer. Which of the following is true for balancing equations? A. The number of products should be equal to the number of reactants. B. The properties of products should be the same as the properties of reactants. C. There must be as equal number of compounds on both sides of the equation. D. There must be as equal number of atoms of each element on both sides of the equation.

Answers

D is the correct answer to your question

Answer:

d

Explanation:

Many paleontologists hypothesize that present-day whales evolved from ancient ancestors that had four legs and walked on land. Evidence for that
hypothesis would be a sequence of whale-like fossils
A. in which the oldest fossils had flipperlike appendages and the most recent fossil had four limbs.
B. in which the oldest fossil had four limbs and the most recent fossil had flipperlike appendages.
C. that indicate that the ancestors of present-day whales were wiped out during a mass extinction.
D. that indicate that whales evolved before animals with four legs.

Answers

Answer:

B

Explanation:

If the oldest fossils showed legs and the more recent ones had only flippers, it would show the change over time.

Y’all plz help I fell asleep and don’t remember

Answers

The answer is

A: Reverses the order of bases in a DNA strand

Took this a while ago and remember the answer and I got them all right. Let me know if there’s anything else you need

Answer:

A.

Explanation:

A mutation is least likely to affect a cell when the mutation reverses the order of bases in a DNA strand.

Microorganisms that can produce ammonia from nitrogen gas

Answers

Answer:

Nitrogen-fixing bacteria

Explanation:

help:/

Part 1: Comprehension Questions
1. What are two things mentioned in the reading that can happen that might affect an ecosystem?
2. Define ecological succession.
3. What is primary succession?
4. Describe an example of primary succession.
5. What is a pioneer species?
6. How long might it take for an ecosystem to become balanced?
7. What happens when an ecosystem is in equilibrium?
8. Define climax community.
9. Name two things that can disrupt a community.
10. What is secondary succession?

Answers

Answer: 1.  One community replacing another as a result of changing abiotic and biotic factors. Establishment of a community in an area of bare rock that does not have topsoil. Lava flow destroys an ecosystem and hardens into bare rock. 2. Ecological succession is the process that describes how the structure of a biological community (that is, an interacting group of various species in a desert, forest, grassland, marine environment, and so on) changes over time. 3.Primary succession, type of ecological succession (the evolution of a biological community's ecological structure) in which plants and animals first colonize a barren, lifeless habitat. 4.   Primary succession occurs when new land is formed or bare rock is exposed, providing a habitat that can be colonized for the first time. For example, primary succession may take place following the eruption of volcanoes, such as those on the Big Island of Hawaii. As lava flows into the ocean, new rock is formed. 5. Pioneer species are hardy species which are the first to colonize barren environments or previously biodiverse steady-state ecosystems that have been disrupted, such as by fire. Some lichens grow on rocks without soil, so may be among the first of life forms, and break down the rocks into soil for plants. 6. THIRTY TO ONE HUNDRED YEARS . 7. Ecological balance has been defined by various online dictionaries as "a state of dynamic equilibrium within a community of organisms in which genetic, species and ecosystem diversity remain relatively stable, subject to gradual changes through natural succession." and "A stable balance in the numbers of each species . A healthy ecosystem is said to be in equilibrium, which is a relatively stable state that keeps population sizes within a sustainable range (not too many of a certain species alive or dead). ... Some bears will starve and fewer cubs will be able to prosper, leading to a smaller overall population the next year. 8.A climax community is the last stage in succession, a stage where an ecosystem reaches a stable state. It is a mature ecosystem. ... Climax communities are stable. 9.  Disturbances such as fire or flood can disrupt a community. After a disturbance, new species of plants and animals might occupy the habitat. Over time, the species belonging to the climax community are likely to return.  10. Secondary succession, type of ecological succession (the evolution of a biological community's ecological structure) in which plants and animals recolonize a habitat after a major disturbance—such as a devastating flood, wildfire, landslide, lava flow, or human activity (e.g., farming or road or building construction)— ... brainliest? plzz

Explanation:

MY MOM GONNA WOOP ME I NEED RIGHT ANSWER

Answers

Hello, imjustAKID23.

The answer here should be “high diversity”.  High diversity allows an ecosystem to be more flexible - thus allowing it to work better in the face of stress.

Does that answer your question?

What front is being forecast for this state?

Answers

it is b :))):)))))))))))))

Why do scientist want to locate the epicenter of an earthquake?

Answers

Answer:

So that the fault that ruptured causing the earthquake can be identified.

Healthy rain forest ecosystems provide ecosystem services, such as clean air, shade, food, and water. How might an increase in palm oil plantations affect humans who live nearby?

Answers

Answer:

Negatively affected.

Explanation:

Increase in palm oil plantations negatively affected humans who live in nearby area because this palm oil plantations is the cause of deforestation. Due to this palm oil plantations, deforestation occurs that leads to loss of habitat of many species as well as decrease in the area of forest which provides us clean air, shade, food, and water. The decrease in forest area also causes natural disaster such as floods in the region. Forests play a significant role in the prevention of floods in the region.

Question is in picture

Answers

Answer:

Your excretory system attempts to cool your skin through evaporation

Explanation:

Sweat is produced from sweat glands which is part of the excretory system. It secretes through the skin in order to decrease temperarure

Do you think we should use technology to alter/manipulate our genetic code?

no files no files no files no files no files no files no files no files no files no files no files no files no files no files no files no files

Answers

i’m pretty sure the answer is no

Why might you always need to have some glucose in the blood?

Answers

Answer:

Blood glucose is a sugar that the bloodstream carries to all cells in the body to supply energy. A person needs to keep blood sugar levels within a safe range to reduce the risk of diabetes and heart disease.

Hope this helps :)

Answer:

you need a lot of starch

Explanation:

for your glucode

Describe why the discovery of deep sea thermal vents helps support the abiogenesis theory.

Answers

The discovery of hydrothermal vents changed all that. Vast communities of animals grew big and fast in the depths! Instead of using light to create organic material to live and grow (photosynthesis), microorganisms at the bottom of the food chain at vents used chemicals such as hydrogen sulfide (chemosynthesis).

Describe a situation where your immune, lymphatic and circulatory systems would all be involved.

Answers

Answer

Lupus is a disease that occurs when your body's immune system attacks your own tissues and organs (autoimmune disease). Inflammation caused by lupus can affect many different body systems — including your joints, skin, kidneys, blood cells, brain, heart and lungs.

Explanation:

HELPPPP!!!
G:Green
B:Blue
-what percent of the offspring will have green skin???-

Answers

Answer:

75%

b

r

a

i

n

l

i

e

s

t

plzzzz ;)

Explanation:

What is cell?? Help plss:(

Answers

Answer:

Cell is the basic unit of life

Answer:

Hey mate.....

Explanation:

This is ur answer.....

Cells are the basic building blocks of all living things. The human body is composed of trillions of cells. They provide structure for the body, take in nutrients from food, convert those nutrients into energy, and carry out specialized functions. Cells have many parts, each with a different function.

A photo is attached for ur reference!

Hope it helps!

mark me brainliest pls.....

Follow me! :)

Non-potable water may contain __________.

A)

disease vectors

B)

pathogens

C)

high levels of chemicals

D)

high levels of suspended solids

E)

all of the above

Answers

Answer:

E all of the above.

Explanation:

All of these things are true of non-potable water.

what is another term for regular reflection

Answers

Answer:

Specular reflection, or regular reflection, is the mirror-like reflection of waves, such as light, from a surface

Answer:

Explanation:

Specular reflection, or regular reflection, is the mirror-like reflection of waves, such as light, from a surface.  

The law of reflection states that a reflected ray of light emerges from the reflecting surface at the same angle to the surface normal as the incident ray, but on the opposing side of the surface normal in the plane formed by the incident and reflected rays. This behavior was first described by Hero of Alexandria (AD c. 10–70).  

Specular reflection may be contrasted with diffuse reflection, in which light is scattered away from the surface in a range of directions.

PLZ ASAP Coniferous trees flourish because they take the opposite approach of deciduous
trees, they grow (slow/ast) and die (young/old),
slow, old
fast, old
Slow young
Fast young

Answers

Answer: They grow slow and die old

Explanation: I just took a  test with the same question and it said I was correct plus it is on this website https://untamedscience.com/biology/biomes/coniferous-forest-biome/

Coniferous trees flourish because they take the opposite approach to deciduous trees, they grow slowly and die old. Thus, the correct option for this question is A.

What are the characteristics of Coniferous trees?

The characteristics of Coniferous trees are as follows:

They have leaves that are very thin in the shape of needles. These trees don't have flowers but produce cones. Due to this, they are called coniferous trees.These trees grow in areas that have snowfall. Hence these trees have needle-like leaves that do not allow the snow to rest on them.

The approach and properties of coniferous trees are absolutely opposite to those of deciduous trees. This is because the environment of both conditions differs greatly.

When there are not enough nutrients present in the soil, coniferous trees generally flourish because they take the opposite approach with respect to deciduous trees. Due to this, they grow slowly and die old.

Therefore, coniferous trees flourish because they take the opposite approach to deciduous trees, they grow slowly and die old. Thus, the correct option for this question is A.

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How many offsprings are formed from asexual reprodcution?

Answers

Answer:

They produce offsprings that are related to the parent, genetically identical to the parent.

Explanation:

Hope it helps :)

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Who were the ancient people that conquered the Romans? Carlos wants to go on a road trip to Jacksonville, Florida.For every gallon of gas, his car travels m milesHe will travel 500 miles to Jacksonville.Gas costs $3.65 per gallon.Which expression shows how much Carlos will spend for gas on the trip to Jacksonville?a) 500(3.65m) c) 3.65(m/500)b) 3.65(500/m) d) 500(1/3.65m)QUICK PLEASE! Find the area of the rectangle.A = [? ] cm26 cm9 cm Find the missing values in the ratio table. Then write the equivalent ratios An object has balanced forces acting on it. Which of the following describes the result these balanced forces have on the object? A. It remains at rest or speeds up in the same direction. B. It speeds up in the same direction or moves at constant speed. C. It speeds up in the same direction or slows down. D. It remains at rest or moves at constant speed in the same direction. Calculate the contribution to total performance from currency, country, and stock selection for the manager in the example below. All exchange rates are expressed as units of foreign currency that can be purchased with 1 U.S. dollar. (Do not round intermediate calculations. Round your answers to 2 decimal places. Input all amounts as positive values.) EAFE Weight Return on Equity Index E1/E0 Manager's Weight Manager's Return Europe 0.6 15 % 1 0.6 12 % Australasia 0.3 16 1.4 0.1 17 Far East 0.1 20 1.2 0.3 17 Hi guys can you tell me some towns in Sri Lanka Plz helppp Im not so smart:) Someone who doesn't belong to either major party is called a(n):Unregistered voterConservativeIndependentLibertarian if it is exactly 8:00, How long does it take for the hands of the clock to be pointed in the same direction PPPPPPPPPPPPPPPPPPLLLLLLLLLLLLLLLLLLLLLLLZZZZZZZZZZZZZZZZZZZZZ HELP I NEED ALL 3 QUESTIONS ANSWERED Which of the following best describes Progressives in the 1800s?Progressives wanted things to stay the same.Progressives pressured the government to change.Progressives supported changes in farming practices.Progressives called for decreased taxes. 3x +2 for x=5Help me please help with these two, or one I will give brainly for correct answer no bots or links PLS HELP MATH ILL GIVE BRAINLIST Helppppp plsssssssssssssssssssssss thanks 2+2== plzzz help me and 20+67 Which edit to these sentences is necessary to correct a writing error? Once the printing press was invented, authors have been able to make copies of their works quickly. This meant that people could publish books and pamphlets more independently than previously. A. Change "books and" to "books, and" B. Change "Once the" to "Once, the" C. Change "have been" to "were" D. Change "pamphlets" to "phamplets" Polson Pool Company is involved in a number of competitive bidding situations. The following costs are anticipated for a project to be bid for Terrance Manufacturing: Direct material $ 680,000 Direct labor 2,450,000 Allocated variable overhead 570,000 Allocated fixed cost 230,000 Which of these costs would be treated differently if Polson had either excess capacity or no excess capacity?a. Allocated variable overhead, $570,000 b. Direct labor, $2,450,000 c. Allocated fixed cost, $230,000 d. Direct materials used, $680,000. Brown Girl Dreaming Book essay 1. Define economics in your own words?2. Define "the Bag" in your own words?.