Table of Contents
- 1 Where does the message that is made in transcription go?
- 2 Does RNA contain a coded message?
- 3 What produces mRNA message?
- 4 Where is mRNA produced?
- 5 What determines the coded information in DNA molecules?
- 6 How do you find the coding sequence?
- 7 How is the information encoded in DNA used to make RNA?
- 8 How does mRNA get its code from DNA?
- 9 Which is part of a gene is messenger RNA?
Where does the message that is made in transcription go?
Thus, the elongation period of transcription creates a new mRNA molecule from a single template strand of DNA. As the mRNA elongates, it peels away from the template as it grows (Figure 5). This mRNA molecule carries DNA’s message from the nucleus to ribosomes in the cytoplasm, where proteins are assembled.
Does RNA contain a coded message?
messenger RNA (mRNA), molecule in cells that carries codes from the DNA in the nucleus to the sites of protein synthesis in the cytoplasm (the ribosomes). RNA, which contains uracil (U) instead of thymine, carries the code to protein-making sites in the cell.
What produces mRNA message?
mRNA is created during the process of transcription, where an enzyme (RNA polymerase) converts the gene into primary transcript mRNA (also known as pre-mRNA). This pre-mRNA usually still contains introns, regions that will not go on to code for the final amino acid sequence.
What is the coding region of an RNA transcript?
The coding region of a gene, also known as the CDS (from coding DNA sequence), is the portion of a gene’s DNA or RNA that codes for protein.
How is RNA coded?
RNA is composed of four nucleotides: adenine (A), guanine (G), cytosine (C), and uracil (U). Three adjacent nucleotides constitute a unit known as the codon, which codes for an amino acid.
Where is mRNA produced?
the nucleus
DNA and Protein Synthesis mRNA is synthesized in the nucleus using the nucleotide sequence of DNA as a template. This process requires nucleotide triphosphates as substrates and is catalyzed by the enzyme RNA polymerase II. The process of making mRNA from DNA is called transcription, and it occurs in the nucleus.
What determines the coded information in DNA molecules?
The four types of nitrogen bases found in nucleotides are: adenine (A), thymine (T), guanine (G) and cytosine (C). The order, or sequence, of these bases determines what biological instructions are contained in a strand of DNA. DNA is made of chemical building blocks called nucleotides.
How do you find the coding sequence?
To find the gene coding sequence, look at the Genomic regions, transcripts, and products section or the NCBI Reference Sequences (RefSeq) section of the Gene record: Clicking on the GenBank link displays the GenBank record in the Nucleotide database.
How is RNA transcribed?
It involves copying a gene’s DNA sequence to make an RNA molecule. Transcription is performed by enzymes called RNA polymerases, which link nucleotides to form an RNA strand (using a DNA strand as a template). Transcription is controlled separately for each gene in your genome.
Where does the RNA product of transcription come from?
Transcription of a particular gene always proceeds from one of the two DNA strands that acts as a template, the so-called antisense strand. The RNA product is complementary to the template strand of DNA and is almost identical to the nontemplate DNA strand, or the sense strand.
How is the information encoded in DNA used to make RNA?
During transcription, the information encoded in DNA is used to make RNA. RNA polymerase synthesizes RNA, using the antisense strand of the DNA as template by adding complementary RNA nucleotides to the 3′ end of the growing strand. RNA polymerase binds to DNA at a sequence called a promoter during the initiation of transcription.
How does mRNA get its code from DNA?
1. Enzyme unzips DNA molecule at the 5′ end 2. MRNA gets code from DNA 3. DNA zips back up and MRNA leaves nucleus with the code. Nice work! You just studied 78 terms!
Which is part of a gene is messenger RNA?
= Messenger RNA (mRNA) is a single-stranded RNA molecule that is complementary to one of the DNA strands of a gene. The mRNA is an RNA version of the gene that leaves the cell nucleus and moves to the cytoplasm where proteins are made.