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
mariarad [96]
3 years ago
8

What happens to RNA polymerase II after it has completed transcription of a gene? a. It begins transcribing the next gene on the

chromosome. b. It is free to bind to another promoter and begin transcription. c. It is degraded. d. It joins with another RNA polymerase to carry out transcription.
Biology
1 answer:
Over [174]3 years ago
7 0

The correct answer is: b. It is free to bind to another promoter and begin transcription

Transcription is the first step of gene expression in which DNA molecule is copied (transcribed) into RNA (mRNA) by RNA polymerase. The process of transcription is divided into three phases:

1. Initiation

• RNA polymerase with transcriptional factors bind to gene promoter  

• RNA polymerase unwinds DNA double helix (transcription bubble is formed)

2. Elongation

• RNA polymerases adds nucleotides complementary to DNA  

3. Termination

• RNA polymerase gets to stop codon (transcribes a sequence of DNA known as a terminator)

• Formed complementary RNA strand is released from DNA-RNA complex.

RNA polymerase is also released and can transcribe some other gene by binding to its promotor. RNA polymerase will transcribe just the genes whose products are needed at a particular moment.

You might be interested in
Which of these is NOT an option to help increase sustainability?
beks73 [17]
There is no image or choices so what exactly do you want us to answer.
8 0
3 years ago
5 of 8 Review Living organisms make and use three main types of ribonucleic acids (RNA) for their biological functions: ribosoma
loris [4]

Answer:

<h2>A. mRNA  (  messenger RNA),B. rRNA  (ribosomal RNA) and C. tRNA  (transfer RNA )</h2>

Explanation:

A. mRNA  (  messenger RNA);

i)it  is the most abundant form of RNA ,

ii) specifies the amino acid sequence for a protein ,

iii) contains exons.

B. rRNA  (ribosomal RNA);

i) it is assembled in the nucleolus ,

ii) is a component of ribosomes .

C. tRNA  (transfer RNA );

i) contains anticodon,

ii) has amino acids covalently attached .

5 0
3 years ago
As part of a purification technique, a mixture of small-protein hormones and peptides are placed in a gel and exposed to an elec
lidiya [134]

Answer:

The correct answer is "negative".

Explanation:

At pH 2 the net charge of the R groups of all the amino acids that comprise the peptide in question would be positive. This happens because of the high content of protons in a solution of pH 2, a value that is below the isoelectric point of all the amino acids. Since the peptide would have a positive net charge, it would migrate to the negative terminal of the gel because opposite charges attract each other.

7 0
3 years ago
How can scientific conclusions be reliable, but also able to be changed with the introduction of new evidence
aleksklad [387]

Answer:

scientific conclusions are reliable as they are helpful for many things however it is true that after the evolution of new ideas the old theory have some changes or may change fully or may be proved wrong but yeah the old theories are still helpful for many reasons and things.

so I think scientific conclusions are reliable

8 0
3 years ago
The last question! This is extremely hard!
MrRissso [65]
A marine layer is an air mass which develops over the surface of a large body of water such as the ocean or large lake in the presence of a temperature inversion. ... As it cools, the surface air becomes denser than the warmer air above it, and thus becomes trapped below it.
4 0
3 years ago
Other questions:
  • Which act addresses abandoned hazardous waste sites with significant contamination?
    6·1 answer
  • "how are mutations and polymorphisms similar and how are they different"
    11·1 answer
  • How do I begin to study human genetics?
    10·1 answer
  • Most fungi are able to reproduce both asexually and sexually. Describe when asexual reproduction occurs and when sexual reproduc
    12·2 answers
  • Which of these divisions of the nervous system is the broadest or most inclusive?
    12·1 answer
  • 17. The
    13·1 answer
  • Bacterial enzymes that cut the DNA of viruses are called:
    8·1 answer
  • :-) :-) :-) :-) :-) :-) :-) :-) :-)
    10·1 answer
  • as you are reading this question, the cells in your eyes are firing in response to the light coming from this paper. which type
    9·1 answer
  • ____________ is often criticized by both heterosexuals and lesbian/gay individuals as indicating promiscuity, indecisiveness, or
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!