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KiRa [710]
2 years ago
7

What enzyme starts the process of transcription?

Biology
1 answer:
Pepsi [2]2 years ago
7 0

Answer:

Transcription is the 1st step in the gene expression (DNA based) by which the information in a sequence of DNA is copied into a molecule of mRNA (messenger RNA). Transcription involves 3 steps:

  • Initiation: In which the DNA molecule sequence unwind and form a small open complex.
  • Elongation: In which RNA polymerase moves with the template strand & synthesizing a messenger RNA.
  • Termination: Occurs when an RNA polymerase crosses a termination sequence in the gene. In the termination step, the mRNA strand is complete & it detaches from DNA.  

RNA polymerase is a multi sub-unite enzyme which is responsible for copying the DNA template into an RNA template during the process of transcription.

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saul85 [17]
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6 0
3 years ago
how many more atoms does ethylene have than carbon monoxide? list the type and number of each atoms PLEASE HELP ME
Valentin [98]
Carbon Monoxide has 2 atoms total - one atom of carbon (C) and one atom of oxygen (O) chemical formula is CO

Ethylene has 6 atoms total, 2 atoms of carbon (C) and 4 atoms of hydrogen (H), chemical formula is C2H4.

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8 0
3 years ago
(b) Based on the data for the groups of cells cultured with 0.1% serum (groups 3 to 7), identify the groups(s) most likely to in
joja [24]

Answer:

Groups 4 to 7 are most likely to be undergoing the mitotic phase of the cell cycle.

Explanation:

Since the four proteins used p16,  p18,  p21, and  p27 are inhibitors of cyclin-dependent kinases (CDK), their absence indicates that the cell is undergoing mitosis - the cell cycle is regulated by CDKs. In the absence of these inhibitors, the cell cycle moves on forward. Because the bar for DNA replication is longer in the case for groups 4 to 7, it is indicative of the fact that these cells have gone through the mitotic phase.

Hope that answers the question, have a great day!

4 0
3 years ago
How many lobes does a liver of a frog have?
Tamiku [17]
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3 0
3 years ago
Read 2 more answers
In general, the nervous system
Arturiano [62]

Answer:

The correct answer will be option-E.

Explanation:

The nervous system is one of the most important systems of the animal body which helps in the transmission of the signals to and fro from the body to the nervous system.

The evolution of this system is the basis of the evolution of the human species as it helped and tried the species to sense the external environment most efficiently as well as improved the response to the environment.

The nervous system improved the response by forming new interactions with each other and responding to it by reducing the response time through reflex actions which formed fast acting response to the environment. The transmission of signals improved as the cells were long-lasting that is present form the birth of an organism  

Thus,  option-E is the correct answer.

6 0
2 years ago
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