The function of tRNA is to decode an mRNA sequence into a protein and transfer that protein to the ribosomes where DNA is replicated. The tRNA decides what amino acid is needed according to the codon from the mRNA molecule. Then the tRNA molecule attaches the amino acid to the amino acid chain and returns to the cytoplasm to do it all over again.Continue Reading
The tRNA molecule, or transfer ribonucleic acid molecule, has two specific functions. According to Scitable, its first function is a translator. It decides what amino acid is needed by looking at the mRNA. The mRNA molecule has three nucleotides, or codons, that refer to a specific amino acid. Once the tRNA molecule recognizes the particular amino acid it needs, its second function kicks in and it becomes a transferrer, moving that amino acid into the growing chain of amino acids.
According to How Stuff Works, tRNA comes in 20 different kinds of molecules, each acting as a carrier for a specific amino acid, of which there are also 20 different kinds. Each folded tRNA molecule contains an anticodon, which corresponds to a codon and determines what amino acid is needed. The tRNA molecules repeat this process until the enzyme chain is complete.Learn more about Molecular Biology & DNA
RNA, or ribonucleic acid, is responsible for the transfer of genetic information to cell components called ribosomes. DNA, or deoxyribonucleic acid, is responsible for the transfer and duplication of long-term genetic information during cell reproduction. They are both essential to the process of creating new organisms and the biological functions of organisms.Full Answer >
The anticodon of transfer ribonucleic acid (tRNA) is a sequence of three bases that is complementary to the three-base sequence of messenger ribonucleic acid (mRNA) to specify the production of an amino acid, according to class notes from Brooklyn College. Anticodons are also present in template strands of deoxyribonucleic acid (DNA) molecules from which mRNA is synthesized, notes a tutorial from UMass Amherst.Full Answer >
The purpose of PCR is to amplify small amounts of a DNA sequence of interest so it can be analyzed separately. PCR can be used to make a large amount of a specific piece of DNA or to test a DNA sample for that sequence.Full Answer >
A codon is a sequence of three nucleotides in DNA or RNA that either codes for a particular amino acid or tells the cellular machinery to start or stop using the code. A group of codons starts with the initiation codon. It then has codons in sequence that gives instructions on the amino acids to use to build a protein, and it then has a stop codon to signal when the protein assembly is complete. Normally, there is one initiation codon and three stop codons, and most amino acids are represented by more than one codon.Full Answer >