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pre mRNA contains the same things as mRNA
- phosphates
-uracil, adenine, guanine, cytosine
-ribose sugar
-hydrogen bonds
-covalent bonds
-GTP cap
-Poly A tail
However, pre mRNA is different because it still contains introns and exons, while mRNA only contains exons
introns code for things which are no longer expressed as traits, and therefore are not translated, they are instead removed by splicesomes
exons code for the traits expressed and therefore are not removed and are expressed
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∙ 13y ago
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∙ 15y agomRNA is a copy of the DNA's genetic information. It is made up of codons (triplets of nucleotides) and codes for one specific amino acid. The amino acids connect by peptide bonds and form polypeptide chains.
Wiki User
∙ 9y agomRNA or Messenger RNA is composed of RNA molecules. mRNA's role is to transfer instructions to the ribosome from DNA.
Wiki User
∙ 13y agomRNA is comprised of Adenine, Uracil, Guanine, and Cytosine. mRNA that has not been spliced also contains introns, which are regions of RNA that do not code for an amino acid.
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What molecules contain the codons?
Dna, Rna, mRna, and tRna, to name just a few!
When isolation the gene why is better to obtain its mRNA?
mRNA does not contain introns (the original DNA does). These are sections which do not code for a functional product - such as a protein. Using mRNA you can deduce what the final (protein) product will be. It also allows you to create cDNA - which is used for storage.
What carry instructions for making proteins?
mRNA
What is the scientific term for writing the mRNA message in a cell?
The creation of mRNA is called transcription. mRNA is being transcribed from the DNA template.
Mrna is synthesized in translation or transcription?
Transcription
Which two structures contain codons and anticodons?
mRNA tRNA
What molecules contain the codons?
Dna, Rna, mRna, and tRna, to name just a few!
When isolation the gene why is better to obtain its mRNA?
mRNA does not contain introns (the original DNA does). These are sections which do not code for a functional product - such as a protein. Using mRNA you can deduce what the final (protein) product will be. It also allows you to create cDNA - which is used for storage.
What molecule contain anticodons?
The tRNA gene sequence is the anti-codon while mRNA is the codon sequence.
Which of the following statements regarding cDNA libraries is false?
a. They are usually double stranded DNA. b. They are composed of DNA synthesized with the use of reverse transcriptase. c. They are composed of DNA synthesized from an mRNA template. d. They contain introns and exons. e. They contain DNA that is complementary to the mRNA from which it was synthesized.
How does DNA mutation affect the mRna?
A change in the sequence of nucleotides in DNA would be reflected in the mRNA molecule that transcribes it. The mRNA would contain the same change as the DNA molecule.
If a section of mRNA contains 144 nucleotides how many codons does it contain?
Codons are read in triplets (3) so divide 144 by 3
What carry instructions for making proteins?
mRNA
If an mRNA is made up of 60 bases how many codons does it contain and how many amino acid does it code for?
A codon is exactly three bases long, so an mRNA strand with 60 bases would contain 20 codons. The first codon will encode for methionine (this is called the "start" codon) and the last codon will be a "stop" codon, which does not encode for an amino acid. Thus, an mRNA strand of 60 bases will code for 19 amino acids. Keep in mind, it is possible for a stop codon to be anywhere on the mRNA strand, and when a stop codon reaches the ribosome, translation must stop. For example, if an mRNA strand contained 30 codons, and the 15th were a stop codon, the mRNA would only code for 14 amino acids and then be done. The other 15 codons would go untranslated.
What does reverse transcriptase use from DNA?
Reverse transcriptase use mRNA to form DNA. mRNA
What is a mRNA structure?
mRNA - messenger ribonucleic acid. DNA is often compared with the drawings for the manufacture of proteins. Developing this production engineering analogy, we can say that, if the DNA - a complete set of drawings for the manufacture of proteins in storage in a safe plant manager, the mRNA - temporary working copy of the drawing, which is issued in the assembly shop. It should be noted that the DNA does not contain adult drawings, and more like a "recipe" for its manufacture.
Where is the process of making mRNA from DNA called?
DNA to mRNA is transcription, whereas mRNA to tRNA is translation. The latter part is when proteins are made from ribosomes and instructions carried over by mRNA from the DNA.
