Q:

What is the function of tRNA?

A:

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.

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.

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Related Questions

  • Q:

    What is the role of the tRNA anticodon?

    A:

    Class resources from The City University of New York describe the transfer ribonucleic acid (tRNA) anticodon as the three-peptide sequence at the base of a transfer RNA molecule that determines where and how the transfer RNA attaches to a messenger ribonucleic acid (mRNA) polymerase. As tRNA is a protein building block, anticodons are vital to living things.

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  • Q:

    How do I describe the role of tRNA in translation?

    A:

    tRNA interprets the nucleotide sequence of mRNA to build the corressponding amino acid sequence. tRNA reads codons of mRNA to build proteins. tRNA does its job after the mRNA is made ready for translation.

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  • Q:

    How is RNA different from DNA?

    A:

    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.

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  • Q:

    Where are enzymes made?

    A:

    According to Georgia State University, enzymes are created at ribosomes, which are either embedded in the rough endoplasmic reticulum or free in the cytoplasm. Ribosomes are the site of all protein synthesis, and according to Elmhurst College, the vast majority of enzymes are proteins.

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