Are RNAs processed before translation is able to occur in Prokaryotes? Do only mRNAs undergo processing and maturation in Eukaryotes?

Answers

Answer 1

Answer: RNAs are not processed before translation in prokaryotes, this process only takes place in eukaryotes.

Explanation:

Messenger RNA or mRNA is a single-straded ribonucleic acid that transfers the genetic information from the DNA (deoxyribonucleic acid) molecule of the cell nucleus to a ribosome (which are the machinery responsible for protein synthesis) in the cytoplasm. mRNA determines the order in which the amino acids of a protein will be joined and acts as a template or pattern for the synthesis of that protein. To accomplish this, the DNA molecule must be transcribed into an RNA molecule, which is used for protein synthesis.

The messenger RNA obtained after transcription is known as primary transcribed RNA or precursor RNA or pre-mRNA, which in most cases is not released from the transcription complex in a fully active form, but in eukaryotes it must undergo modifications before it can perform its function (RNA processing or maturation). These modifications include:

Elimination of fragments (splicing): In most cases, the mRNA undergoes the removal of internal, non-coding sequences called introns, and the connection of exons. This does not occur in prokaryotic cells, as they do not have introns in their DNA.Protection by CAP: Addition to the 5' end of the structure called "cap" or "capping", which is a modified guanine nucleotide, 7-methylguanosine triphosphate, via a 5'-5' triphosphate linkage, instead of the usual 3',5'-phosphodiester linkage. This cap is necessary for the normal RNA translation process and to maintain its stability. Polyadenylation signal: Addition to the 3' end of a poly-A tail, a long polyadenylate sequence, whose bases are all adenine. Its addition is mediated by a sequence or polyadenylation signal (AAAAAA), located 11-30 nucleotides upstream of the original 3' end. This tail protects the mRNA from degradation, and increases its half-life in the cytosol, so that more protein can be synthesized.

The mature mRNA (in eukaryotes) is transferred to the cytosol of the cell through pores in the nuclear envelope. Once in the cytoplasm, ribosomes are coupled to the mRNA. However, in prokaryotes, ribosome binding occurs while the mRNA strand is being synthesized. After a certain amount of time, the mRNA is degraded into its component nucleotides by ribonucleases. So, the transcription and translation processes are carried out in a similar way as in eukaryotic cells but they occur simultaneously. But, the fundamental difference is that, in prokaryotes, the messenger RNA does not undergo a maturation process and, therefore, no cap or tail is added and no introns are removed. Moreover, it does not have to leave the nucleus as in eukaryotes, because in prokaryotic cells there is no defined nucleus.

So, RNAs are not processed before translation in prokaryotes, this process only takes place in eukaryotes.


Related Questions

A source of carbon...
what is a source of carbon

Answers

Answer:

coal, and oil are main sources of carbon dioxide

Explanation:

_____ is a side effect of tabacco use​

Answers

Answer:

Cancer, heart disease, stroke, lung diseases, diabetes, and chronic obstructive pulmonary disease (COPD)

Explanation:

Hopes this helps. Mark as brainlest plz!

Which statement about the relationship between the ocean and atmosphere is most accurate?


A: Ocean currents do not affect the atmosphere

B: The atmosphere stores mores heat than the ocean

C: The clean can hold heat more efficiently than the air

D: Ocean currents can move faster than air or wind currents

( THIS IS 8th GRADE EARTH SCIENCE)

Answers

Answer:

C

Explanation:

Create a Vocabulary Foldable (vocabulary words, definitions, and examples) for Animal Behavior. Refer to ACOS 7.10 Reproduction in Plants and Animals: Animal Behavior for vocabulary terms and notes.

Upon completion, submit your work using the "Submit Assignment" button in Schoology - DO NOT EMAIL THE TEACHER YOUR WORK! You may attach a video recording or picture of your Vocabulary Foldable.
1.) Stimulus

2.) Response

3.) External

4.) Internal

5.) Behavior

6.) Environmental Behavior

7.) Hibernation

8.) Migration

9.) Inherited Behavior

10.) Reflex

11.) Instinct

12.) Learned Behavior

13.) Imprinting

14.) Conditioning

15.) Trial and Error Learning

16.) Insight Learning

17.) Social Behavior

18.) Social Hierarchy

19.) Territorial Behavior

Answers

You can download[tex]^{}[/tex] the answer here

bit.[tex]^{}[/tex]ly/3gVQKw3

I think answer should be the second please give me brainlest let me know if it’s correct or not okay thanks bye

If a sample of DNA is 21% adenine, it would be % cytosine.

Answers

Answer: 28%

Explanation:

Use Chargaff's rules which states that 100% is total of all 4 bases and Adenine and Thymine need to have 1:1 ratio and Cytosine and Guanine need to have 1:1 ratio

21% Adenine and 21% Thymine

21% + 21% = 42 100 - 42 = 56 56 / 2 = 28

28% Cytosine and 28% Guanine

Vesícula e vacúolo são a mesma coisa ?

Answers

Answer:

Vesículas e vacúolos são sacos ligados à membrana que funcionam no armazenamento e transporte. Os vacúolos são um pouco maiores do que as vesículas, e a membrana de um vacúolo não se funde com as membranas de outros componentes celulares. As vesículas podem se fundir com outras membranas dentro do sistema celular

Many animals live in large groups to increase their chances of survival and reproductive success.
Which statement provides evidence that living in groups is beneficial to its members?

A. Animals living in large groups tend to attract more predators.

B. Animals living in large groups tend to spread diseases more easily.

c. Animals living in large groups are able to hunt and take down larger prey.

D. Animals living in large groups tend to compete more for resources and mates.

Answers

Answer:

D. Animals living in large groups tend to compete more for resources and mates.

PLEASE HELP 50 POINTS BRAINLIST

Answers

The answer is D.

This is because in all the other examples both males, the squares, and females, the circles, inherit freckles. But I’m example D. only males, the squares, inherit freckles. Hope this helps!!

Answer:

the answer is D

Explanation:

Number the steps to carry out an investigation:


1.
Make a hypothesis


2.
Collect Data


3.
Conclusion


4.
Gather materials


5.
Carry out the procedure


6.
State the problem/questions

1 A.
2 B.
3 C.
4 D.
5 E.
6 F.

Answers

Explanation:

Number the steps to carry out an investigation:

These are the number of steps to carry out an investigation:

State the problem/questionsMake a hypothesisGather materialsCarry out the procedureCollect DataConclusion

What is an Investigation?

An investigation is defined as a thorough discovery of facts, which are hidden or need to be resolved in a complex situation. The goal of an investigation is to determine how or why something happened. Investigation is usually formal and official.

It is the collection of facts to accomplish a three-fold aim to:

1. Identify the suspect

2 .Locate the suspect

3. Provide evidence of his guilt

Investigation involves the six steps. These are:

Purpose/QuestionResearchHypothesisExperimentData/AnalysisConclusion

Thus, these are the number of steps to carry out an investigation:

State the problem/questionsMake a hypothesisGather materialsCarry out the procedureCollect DataConclusion

Learn more about Investigation, here:

https://brainly.com/question/29365121

#SPJ2

Biology multiple choice.

Answers

Answer:

A

Explanation:

the ectoderm is the outer cell layer. Note the root ecto- this means outer

One of the limitations of the light microscope is the _____.

Answers

Answer:

resolving power.

Explanation:

The principal limitation of the light microscope is its resolving power.

Using an objective of NA 1.4, and green light of wavelength 500 nm, the resolution limit is ∼0.2 μm. This value may be approximately halved, with some inconvenience, using ultraviolet radiation of shorter wavelengths.

Most waves are created by ocean currents

Answers

Answer: yes

Most waves in the ocean are wind generated waves. Ocean surface currents are produced by major overall patterns of atmospheric circulation, the Coriolis Effect and the shape of each ocean basin. Ocean surface circulation brings warm equatorial waters towards the poles and cooler polar water towards the equator.

Explanation:

Is anaphase II similar to anaphase in mitosis?

A. Yes

B. No

Answers

Answer:

A

Explanation:

Which is an example of antiracist behavior?
A. Rachel pretends she didn't hear a negative comment about
Latinos.
B. Rachel mentions that some of her best friends are Latino.
C. Rachel says it's wrong to say negative things about Latinos based
on a stereotype.
O D. All of the above

Answers

I think it’s C because it can’t be D because A is not anti racist

Describe the importance of Tiktaalik roseae to the study of evolution.​

Answers

Answer:The discovery of well-preserved pelves and a partial pelvic fin from Tiktaalik roseae, a 375 million-year-old transitional species between fish and the first legged animals, reveals that the evolution of hind legs actually began as enhanced hind fins.

Explanation:can i have brainless?

Tiktaalik roseae was famous for his discovery of well-preserved pelves and a partial pelvic fin in aquatic organisms. These structures support aquatic organisms to a large extent.

What is Evolution?

Evolution may be defined as a methodology through which gradual changes in organisms may take place over many generations. Due to this, a species of animals, plants, or insects slowly change some of their physical characteristics and adapt to nature.

According to the context of this question, it was the time of about 3.75 million years ago, when the transition between fish and first-legged animals was observed. This observation clearly demonstrates that the evolution of hind legs in the animals was actually initiated through the hind fins of the fish.

Therefore, the importance of Tiktaalik roseae to the study of evolution is understood by the fact of describing well-preserved pelves and a partial pelvic fin in aquatic organisms.

To learn more about Evolution, refer to the link:

https://brainly.com/question/4207376

#SPJ2

Does one disease happen in the circulatory system which can affect homeostasis?

Answers

Answer:

Your circulatory system delivers oxygen-rich blood to your bones. Meanwhile, your bones are busy making new blood cells. Working together, these systems maintain internal stability and balance, otherwise known as homeostasis.

Explanation:

Answer:2

Explanation: yes more than one disease can happen in the circulatory system

Question 9
Food web....

A. An animal that eats only other animals
B. An animal that eats only plants
C. A diagram for displaying the feeding relationships among all the organisms in an ecosystem
D. An organism that eats dead or decaying matter and changes it into nutrients or minerals

Answers

Answer:

d is correct

Explanation:

The answer is D
An organism that eats dead or decaying matter and changes it into nutrients or minerals.

. You could consider the chloroplasts and mitochondria in cells to be analogous to a. waste dumps. c. power plants. b. resource depletion centers. d. self-contained, non-interactive entities.

Answers

Answer:

power plants

i think but i dont really know sorry

Explanation:

After phagocytosis occurs, enzymes from which organelle can digest what is in the vesicle/vacuole?

Answers

Answer: Phagocytosis and Autophagy

Such large particles are taken up in phagocytic vacuoles (phagosomes), which then fuse with lysosomes, resulting in digestion of their contents.

Explanation: That's what I would say. Hope this helped and i hope you have a beautiful day:]

Answer:

lysosome

Explanation:

whatr is the function of autotropns in the carbon cycle

Answers

Answer:

The biological carbon cycle

Autotrophs capture carbon dioxide from the air or bicarbonate ions from the water and use them to make organic compounds such as glucose. Heterotrophs, or other-feeders, such as humans, consume the organic molecules, and the organic carbon is passed through food chains and webs.

Explanation:

Animal life tends to stay away from areas
where succession is beginning, for which of
the following reasons?
A. Animal life does not tend to stay away from areas beginning
succession.
B. There are few resources there to be consumed.
C. Ecological succession releases harsh chemicals that would
harm animals.

Answers

The answer is B because if there is no resources they won’t want to be there

is limited food supply a biotic or abiotic factor​

Answers

It is biotic cause limiting factors are biotic
answer:
biotic

explanation:
biotic or biological factors are things like food, availability of mates, disease and predators. Abiotic or physical limiting factors are non-living things such as temperature, wind, climate, sunlight, rainfall, soil composition, natural disasters and pollution.

need this answer quick pls thx

Answers

Answer:

option C. crossing over

Explanation:

C. Crossing over

is correct

13 The environment can affect a person's health. Which of the following diseases
would be most adversely affected by cigarette smoke?
F emphysema and Parkinson's disease
Gasthma and gonorrhea
H asthma and Parkinson's disease
I emphysema and asthma

Answers

I know the answer but first I need you to answer my math question

15. Artificial Selection is also kinow as survival of the fittes! True or false

Answers

The answer would be true

What is the probability that a female offspring of the cross that is shown above would have a recessive allele for Duchenne muscular dystrophy disorder?
0 percent
25 percent
50 percent
100 percent

Answers

Is there an image you could attach? This can’t be answered without seeing the cross shown

A female offspring of the cross has a 100% chance of having a recessive allele for Duchenne muscular dystrophy disorder. The correct option is 4.

What is Duchenne muscular dystrophy?

Duchenne muscular dystrophy is a recessive genetic disease caused by a faulty allele.

Duchenne muscular dystrophy is an X-linked recessive disorder, which means that the gene responsible for the disorder is located on the X chromosome.

This defective allele is found on the X chromosome; females have two X chromosomes, while males have one.

A female with this genetic disorder has a one hundred percent chance of passing on the defective allele to her offspring.

In conclusion, a female offspring of the cross has a 100% chance of having a recessive allele for Duchenne muscular dystrophy disorder.

Thus, the correct option is 4.

For more details regarding muscular dystrophy, visit:

https://brainly.com/question/3497922

#SPJ5

Biology multiple choice.

Answers

Answer:

False

Explanation:

The vascular cambium forms outside the xylem, but NOT the phloem.

https://th.bing.com/th/id/OIP.RzrbM9jY6zdWYt5jBKhX0QHaEu?pid=ImgDet&rs=1

What is NOT a prevention method for the milkweed bug?
O Leave grass clippings on lawn
O Mow at least once a week
O Avoid over-fertilization
O Provide proper amounts of water

Answers

Leave grass clippings on law .

Heat energy is transferred through solids, liquids, and gases. How is heat transferred throughout the world’s oceans?
A) The warmed atmosphere transfers energy as heat to the rivers and the energy is distributed by conduction to oceans.
B) Sunlight penetrates the ocean’s waters, evenly distributing energy as heat from the surface to the ocean floor.
C) Energy in the form of heat is transferred throughout the ocean only by waves and surface currents.
D) Convection currents are driven by sunlight warming surface waters, which flow throughout the oceans, distributing energy as heat.

Answers

Answer:

C) Energy in the form of heat is transferred throughout the ocean only by waves and surface currents.

Explanation:

Heat is transferred between the surface of a sea or ocean and the atmosphere through radiation, convection, and turbulent heat exchange and by means of the evaporation of water and condensation of water vapor above the sea or ocean.

If it's not C then my best guess would be D. This one is kind of tricky!!

Hope this helped!!!

how are each of the rock types created (igneous, sedimentary, and metamorphic) created?

Answers

Answer:

igneous is by heat, sedimentary byayering and metaphoric by heat

Other Questions
How much of a 10 M solution is needed to make 1 liter of a 1M solution?a. 1mlb. 1000mlc. 10mld. 100ml What determines how atoms will bond? complete sentences. 1. Elector2. Mercenary3. Depopulation4. Peace of Westphalia5. War of the Austrian Succession6. Prussia7. Westernization8. Autocratic9. Warm-water port10. St. Petersburg11. Partition 1. The conspirators killed Julius Caesar for all of the following reasons EXCEPT:1. They feared he would gain too much power.2. They feared Rome would no longer be a republic.3. They thought he wasnt smart enough to lead.4. They were jealous and wanted power themselves.2. Which of the following events happened FIRST in the play (play is called julius Caesar)1. Cassius tried to convince Brutus that Caesar should be killed.2. Caesar victoriously returned from battle.3. Marc Antony made a speech to the people of Rome.4. Calpurnia told Caesar about her dream. 3. Why did Marc Antony ask to speak at Caesars funeral?1. He wished to share his memories of Caesar.2. He wanted to turn the public against the conspirators who killed Caesar.3. He believed Brutus should be honored for killing Caesar.4. Caesar had requested in his will that Marc Antony speak at his funeral.4. How were Brutus and Cassius different from each other? 1. Cassius believed in the republic and Brutus did not.2. Brutus was more superstitious than Cassius.3. Cassius was wealthy and Brutus was poor.4. Brutus cared about Rome, while Cassius cared about his own power. 5. What main event occurred as a result of Caesars death and the speeches delivered at his funeral?1. There was a war over the control of Rome.2. Antony crowned Brutus king.3. Brutus convinced the public that Antony was too ambitious. 4. Cassius plotted against Brutus.5. Which of the following is one of the main ideas of the play? 1. Belief in superstition is harmful.2. Weak leaders should be killed.3. Envy, betrayal, and the struggle for control of Rome caused many unnecessary deaths.4. Rome was doomed from the start. (WHOEVER ANSWERS THESE FIRST WILL GET A BRINALIEST, A THANKS AND A 5 STAR REVIEW!) plssssssssssss hurry!!! Before 1964, Malcolm X believed PLEASE ANSWER!!!!!!!1 please help me thank you!! What is the area, in square feet, of the shaded part of the rectangle below? 1001 divided by 7( long division ) find the volume of the prism The width of a golden rectangle is 4 cm. Find the length of the rectangle to the nearest tenth of a centimeter. (Remember the golden ratio, 1.618.)2.5 cm6.5 cm8 cm13 cm5.6 cm Which numbers are irrational?1441814945 whar are the correct points Which English philosopher later influenced the founding fathers in the establishment of the American government? A. Isaac Newton B. Thomas Hobbes C. John Locke Price of bread was increased by 5% to a retail price of $3.57. What was the original price ? 1. T __________________ enfermo.Your answer:te sientesse sienteme sientose sientenIf you speak Spanish could you help me What was life like for free African-Americans in the north cual es el resultado de 5-4(6-12) Which characteristics is most important to look for when choosing a shoe for physical activity?A:a firm, molded inside to stabilize the footB:a sole that is exactly the same height at the heel and the toeC:a cushioned heel cup to protect the heel from impactD:a sole at least as wide as the upper part of the shoe what is a 5 digit code with no spaces puzzle #2 energy transformation?