Which of the following are transcribed by RNA polymerase II?

Which of the following are transcribed by RNA polymerase II?

RNA polymerase II (RNAP II and Pol II) is a multiprotein complex that transcribes DNA into precursors of messenger RNA (mRNA) and most small nuclear RNA (snRNA) and microRNA. It is one of the three RNAP enzymes found in the nucleus of eukaryotic cells.

Is RNA polymerase II a transcription factor?

Key Concepts. Transcription is a multistep process consisting of initiation, elongation and termination for RNA (ribonucleic acid) synthesis. RNA polymerase II (RNAPII) is a key enzyme/factor in transcription of the protein‐coding genes to messenger RNA (mRNA).

Which of the enzyme is not responsible for transcription?

Transcription is under control of the enzyme RNA polymerase which is not shown here.

What is the enzyme responsible for transcription?

RNA polymerase

What happens to RNA after transcription?

DNA transcription occurs in a cell’s nucleus. The RNA that is synthesized in this process is then transferred to the cell’s cytoplasm where it is translated into a protein. In prokaryotes, the RNA that is synthesized during DNA transcription is ready for translation into a protein.

What is the last step of transcription?

Termination is the ending of transcription, and occurs when RNA polymerase crosses a stop (termination) sequence in the gene. The mRNA strand is complete, and it detaches from DNA.

What are the steps for transcription?

Transcription involves four steps:

• Initiation. The DNA molecule unwinds and separates to form a small open complex.
• Elongation. RNA polymerase moves along the template strand, synthesising an mRNA molecule.
• Termination. In prokaryotes there are two ways in which transcription is terminated.
• Processing.

What is the transcription process?

Transcription is the process by which the information in a strand of DNA is copied into a new molecule of messenger RNA (mRNA). The newly formed mRNA copies of the gene then serve as blueprints for protein synthesis during the process of translation.

How many bases are needed for 3 amino acids?

nine nucleotide bases

How many bases are needed to make three amino acids?

9 bases

What if the first triplet was CAA?

If the first triplet codon after the start codon is CAA then the amino acid which is formed is the glutamine.

Which amino acid has 4 codons?

For example, six codons specify leucine, serine, and arginine, and four codons specify glycine, valine, proline, threonine, and alanine. Eight amino acids have two codons, whereas there is one codon each for methionine and tryptophan.

Do all codons code for amino acids?

There are 64 possible codons, three of which do not code for amino acids but indicate the end of a protein. The remaining 61… Each codon stands for a specific amino acid, so if the message in mRNA is 900 nucleotides long, which corresponds to 300 codons, it will be translated into a chain of 300 amino acids.