the difference between prokaryotic and eukaryotic gene regulation

Answers

Answer 1

Answer:

READ THIS

Explanation:

To understand how gene expression is regulated, we must first understand how a gene codes for a functional protein in a cell. The process occurs in both prokaryotic and eukaryotic cells, just in slightly different manners.

Prokaryotic organisms are single-celled organisms that lack a cell nucleus, and their DNA therefore floats freely in the cell cytoplasm. To synthesize a protein, the processes of transcription and translation occur almost simultaneously. When the resulting protein is no longer needed, transcription stops. As a result, the primary method to control what type of protein and how much of each protein is expressed in a prokaryotic cell is the regulation of DNA transcription. All of the subsequent steps occur automatically. When more protein is required, more transcription occurs. Therefore, in prokaryotic cells, the control of gene expression is mostly at the transcriptional level.

Eukaryotic cells, in contrast, have intracellular organelles that add to their complexity. In eukaryotic cells, the DNA is contained inside the cell’s nucleus and there it is transcribed into RNA. The newly synthesized RNA is then transported out of the nucleus into the cytoplasm, where ribosomes translate the RNA into protein. The processes of transcription and translation are physically separated by the nuclear membrane; transcription occurs only within the nucleus, and translation occurs only outside the nucleus in the cytoplasm. The regulation of gene expression can occur at all stages of the process (Figure 1). Regulation may occur when the DNA is uncoiled and loosened from nucleosomes to bind transcription factors (epigenetic level), when the RNA is transcribed (transcriptional level), when the RNA is processed and exported to the cytoplasm after it is transcribed (post-transcriptional level), when the RNA is translated into protein (translational level), or after the protein has been made (post-translational level).

Answer 2

Answer:

Prokaryotic gene expression is primarily controlled at the level of transcription. Eukaryotic gene expression is controlled at the levels of epigenetics, transcription, post-transcription, translation, and post-translation.


Related Questions

1. What is the density of an object that has a mass of 1,470 g and volume of 42 mL?

Answers

Answer:below

Explanation:

ρ =  m/V=  

1470 gram/42 milliliter

=  35 gram/milliliter

=  35000 kilogram/cubic meter

Place a checkmark next to each cellular component necessary to build a bacterial cell:
plasma membrane
cell wall
DNA
nucleus
mitochondria
chloroplast
Golgi apparatus
rouch endoplasmic reticulum
smooth endoplasmic reticulum
flagella

Answers

Answer: Cell wall, DNA,  plasma membrane

Explanation:

Please mark as brainliest if your want!

The cellular component necessary to build a bacterial cell include:

Cell membraneDNACell wallRibosomesCytoplasmFlagella

What is Bacteria?

These are micro-organisms which can't be seen with the eyes but with the use of instruments such as microscope.

They lack a nucleus and their DNA is usually found in the nucleoid region of the cell.

Read more about Bacteria here https://brainly.com/question/8695285

#SPJ6

Which of the following scenarios is representative of parasitism? A.Tapeworms living in mammal's intestinal tract B.Remora fish attaching themselves to sharks C.Birds feeding on insects stirred up by grazing animals D.Birds eating scraps of food from crocodile's teeth

Answers

Answer:

A- Tapeworms living in a mammal's intestinal tract.

Explanation:

Parasitism is a symbiotic relationship between species, where one organism, the parasite, lives on or in another organism, the host, causing it some harm, and is adapted structurally to this way of life.

Hope this helps!

How does the analogy contrast to the cell wall ?

Answers

Answer:

An analogy for the cell wall is that thecell wall is like an outer wall along a castle (enclosed compound). The cell wall is a rigid outer barrier.

Explanation:

please mark as brainlist answers

Which of the following substances increases in amount during the cellular respiration of glucose?

Select one:
a. O2
b. NADH
c. ADP
d. Glucose

Answers

The answer is letter C. ATP

Scientists have a theory about the relationship between climate and biodiversity. Which best describes this theory?

Warmer climates promote higher biodiversity, allowing plants to grow year-round. This supports more organisms that rely on plants.
Colder climates promote higher biodiversity, reducing the competition among organisms for food. This supports stronger organisms that live longer.
Warmer climates promote higher biodiversity because they tend to receive more rainfall. This provides a source of water for more organisms.
Colder climates promote higher biodiversity because they are usually larger in size. This provides space for more organisms.

Answers

Answer:

c

Explanation:

"warmer climates promote higher biodiversity because they tend to receive more rainfall. This provides a source of water for more organisms."

Answer:

The correct answer is A

_______ species are the first species to colonies disturbed or newly created environment

Answers

Native species should be the correct answer

what is one common example of a double replacement reaction??????

Answers

The reaction:

AgNO3 + NaCl → AgCl + NaNO3

is a double replacement reaction. The silver traded its nitrite ion for the sodium's chloride ion.

Another example is the reaction between sodium sulfide and hydrochloric acid to form sodium chloride and hydrogen sulfide:

Na2S + HCl → NaCl + H2S

what happened as a result of over hunting whales

Answers

Everyone died snake kappa mf f d

Which two of the following correctly describe what a gene is?

A packet of genetic information that can be passed down from one generation to the next
A DNA molecule
The entire collection of genetic information in a given species
A section of DNA that provides instructions for building a specific protein
I'm not sure

Answers

Answer:

A section of DNA that provides instructions for building a specific protein and A packet of genetic information that can be passed down from one generation to the next

Explanation:

A DNA molecule is not a gene, it is a nucleotide. The entire collection of genetic information in a given species results isn't a gene although many genes comprise what is the genome.  Given that those two answers are not what genes are, the other two options are correct.

Other Questions
Jordan invested $97,000 in an account paying an interest rate of 1.6% compoundedmonthly. Assuming no deposits or withdrawals are made, how long would it take, tothe nearest year, for the value of the account to reach $109,700? Can cause severe mental disabilities if ingested in small quantities? Name the element that was commonly used in paints. mental math again 60x40x2 the following equation has been solved incorrectly. Explain the students error Please answer this.. please Plz help Plz helpElla played a math game and had the five cards shown.7 0 -4 -10Her score was the sum of the numbers on these five cards. What was Ellas score?3235Not here Help pls idk pls pls and thank you I NEED HELP ITS URGENT!!! I WILL MARK BRAINLIST!! LOOK AT THE IMAGE ABOVE AND DO BOTH PROBLEMS BY SHOWING THE ENTIRE WORK!!Do NOT answer if you DONT know. This could lead to serious consequences. Ex: idk could lead to the monitor marking you to loose points. PLEASE HELP Which narrative point of view is used in this excerpt from The Lilys Quest by Nathaniel Hawthorne?So one breezy and cloudless afternoon Adam Forrester and Lilias Fay set out upon a ramble over the wide estate which they were to possess together, seeking a proper site for their temple of happiness. They were themselves a fair and happy spectacle, fit priest and priestess for such a shrine, although, making poetry of the pretty name of Lilias, Adam Forrester was wont to call her "Lily" because her form was as fragile and her cheek almost as pale. As they passed hand in hand down the avenue of drooping elms that led from the portal of Lilias Fay's paternal mansion they seemed to glance like winged creatures through the strips of sunshine, and to scatter brightness where the deep shadows fell. Melanie had 3 pounds of dried fruit. She packed the dried fruit into bags of 3/8 pound each. How many bags of dry fruit does she pack? what is a unit of electrical flow called Deandre pays $15.20 for a pack of 8 towels.Find the unit price in dollars per towel.If necessary, round your answer to the nearest cent.Please help Workers have been down the street installing two blinking red lights in front of the fire station. The two lights are always turned on at the same time. Both lights blink as they are turned on. One lights blinks after every 8 seconds. The other light blinks every 22 seconds. After how many seconds will they blink together again? ITS SUPER EASY PLEASE HELP ITS DUE IN AN HOUR PLEASEEEEEEEEEEEEEEEEEEEEEE A scientist studied bacteria.She placed 4 bacteria in a dish.The population of bacteria triples every 12 hoursWhich equation can be used to determine the number of bacteria, y, present after x days?O y = 4(3)xO y=4(6)xO y = 4(3) 2xO y = 4(6) 2x Tori, a 23 year-old, is unemployed and afraid to leave her house. She has only left her house once in the past year. Her fear of leaving the house started about a year ago when she was in the supermarket and suddenly experienced a feeling of sheer terror. She felt like she was totally out of control and might die. She had two subsequent attacks, both when she was out of her house, and since then she has been afraid to go out. On the one occasion when she left her house in the past year, she insisted that her best friend accompany her and stay by her side until she returned home. Tori may suffer from ____________. Anand needs to hire a plumber. He's considering a plumber that charges an initial fee of \$65$65dollar sign, 65 along with an hourly rate of \$28$28dollar sign, 28. The plumber only charges for a whole number of hours. Anand would like to spend no more than \$250$250dollar sign, 250, and he wonders how many hours of work he can afford. Let HHH represent the whole number of hours that the plumber works. Jim Crow laws were laws that- A- separated the sexesB- denied citizenship C-taxed voters D-separated the races How did the Bessemer process improve manufacturing? Which of the following was the African American killed in the Boston Massacre?(5 points)Samuel AdamsCrispus AttucksPaul RevereJohn Adams