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
Sedaia [141]
3 years ago
13

What is Transcription? Please describe all the stages properly.​

Biology
1 answer:
Arada [10]3 years ago
6 0

Answer:

There are 3 stages. Initiation, Elongation and Termination. Read description for more information.

Explanation:

Transcription is the process in which a gene's DNA sequence is copied to make a new RNA molecule. The RNA polymerase is the main transcription enzyme for this process.

Some key facts about Transcription process:

  1. Transcription is the process in which a gene's DNA sequence is copied (transcribed) to make an RNA molecule.
  2. The RNA polymerase is the main transcription enzyme.
  3. Transcription starts when RNA polymerase attaches to a promoter sequence near the beginning of a gene. It can be connected directly or through any helper proteins.
  4. RNA polymerase uses one of the DNA strands (the template strand) as a template to make a new, complementary RNA molecule.
  5. Transcription ends in a process called termination. Termination depends on sequences in the RNA, which signal that the transcript is finished.

There are three stages of the transcription process. Those are:

  1. Initiation.
  2. Elongation.
  3. Termination.

Stages or Steps of Transcription are briefly described given below:

1. Initiation stage.

For beginning transcribing a gene, RNA polymerase binds to the DNA of the gene at a region called the promoter. The promoter tells the polymerase where to "sit down" on the DNA and begin transcribing. Each gene (or, in bacteria, each group of genes transcribed together) has its own promoter. A promoter contains DNA sequences that let RNA polymerase or its helper proteins attach to the DNA. Once the transcription bubble has formed, the polymerase can start transcribing. This means Transcription starts.

2.Elongation stage

Once RNA polymerase is in the position at the promoter, the next step of transcription elongation can begin. Elongation is the stage when the RNA strand gets more extended, with the help of the addition of new nucleotides.

During elongation, RNA polymerase "walks" along one strand of DNA, known as the template strand. It goes in the 3' to 5' direction. For each nucleotide in the template, RNA polymerase adds a matching  RNA nucleotide to the 3' end of the RNA strand. The RNA transcript is nearly identical to the non-template, or coding, the strand of DNA. However, RNA strands have the base uracil (U) in place of thymine (T), as well as a slightly different sugar in the nucleotide.

3. Termination stage

RNA polymerase will keep transcribing until it gets signals to stop. The process of ending Transcription is called termination, and it happens once the polymerase transcribes a sequence of DNA known as a terminator.

What happens after the Transcription:

After termination, the Transcription becomes finish. An RNA transcript becomes ready to be used in the translation process. It is called a messenger RNA (mRNA). In bacteria, RNA transcripts are ready to be translated right after Transcription. They're prepared a little sooner than that: translation may start while Transcription is still going on!

You might be interested in
Is a elk a producer consumer or decomposer
g100num [7]
An Elk is a consumer; it eats plants.
3 0
3 years ago
Put the phases of the earth's atmosphere and their causes in order
Temka [501]

Answer:

Explanation:

All great elements

4 0
3 years ago
Several types of white blood cells are which engulf bacteria and cellular debris
ZanzabumX [31]
That's true jksnshdmdma
4 0
3 years ago
Why is a person with type AB blood able to receive a blood transfusion from a donor with any of the major blood types (A, B, AB,
Alisiya [41]

Answer:

ABO blood grouping system is based on presence or absence of three types of antigen on red blood cells. A and B blood group have A and B antigens respectively. AB blood group has both A and B antigens. O blood group does not have any antigen.

A body with particular blood type will consider other blood group foreign ( because it has different antigen ) and produce antibodies against it. A person with blood type A can not be given B type blood because the antibodies in his body will destroy RBCs with B antigen which may even prove fatal.

AB blood type person can receive blood from both A and B blood groups because he has antigens for both of them so it will produce antibodies for neither of them. He can also receive O type blood because O blood does not have any antigen so it can be given to any person without incompatibility reaction.  

However, AB individual can only donate blood to AB individual because his blood cells have both A and B antigens. So, he can only donate blood to an individual who does not produce antibodies for both A and B blood groups and that would only be another AB blood type individual.

3 0
3 years ago
At what temperature on Celsius scale does pure water freeze?
natka813 [3]
Pure water freezes at 32 degrees Fahrenheit, and at 0 degrees Celsius.
Hope this helps!
7 0
3 years ago
Other questions:
  • Bacteria consist of a single cell and have no nucleus. What are bacteria called? A. Organelles B. Multicellular C. Eukaryotes AN
    5·2 answers
  • Read the excerpt from The code book. What part of speech is the underlined word?
    14·1 answer
  • Explain how a unicellular organism, such as a paramecium uses cilia to help with nutrition
    15·1 answer
  • Why is the ability to respond to stimuli critical
    5·1 answer
  • The study of the interaction of organisms with each other and their environment involves non-living factors, also called _______
    5·2 answers
  • What is:<br> Behavioral isolation Temporal Isolation <br> Habitat Isolation
    14·1 answer
  • Question 3 of 10
    14·1 answer
  • Brian is a forensic investigator studying a tool mark on a door jam. He has gone through the steps of collecting the tool mark e
    6·1 answer
  • ¿Que importancia tiene el ciclo de la célula en el desarrollo de los seres vivos?​
    12·1 answer
  • Soil erosion is the wearing down of soil. This map provides data on the rate of soil erosion in the United States for a given ye
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!