How are messenger RNA transfer RNA ribosomal RNA different?

Answer 1

mRNA is short lived and used solely as a template for protein synthesis, it consists of triplets of bases ("codons") to which the complementary tRNA triplets ("anticodons") match up to. For example, if an mRNA codon was A U G, then the complementary tRNA anticodon would be U A C.

tRNA are clover/cross-shaped chains of RNA that have an active "anticodon" at one end, and an attached animo acod at the other end, that corresponds to the anticodon. This means that when the anticodon of the tRNA matches with the complementary codon of the mRNA, the amino acid added to the protein chain is always the same one for those given codons.

rRNA is a massive molecule consisting of two parts; a small section, and a large section. It is between these two sections that the mRNA fits, and into the large lecton that the tRNA complexes (with attached amino acids) are taken. rRNA molecules have two main binding sites. When a tRNA molecule is bound, the mRNA molecule moves along one space, and another tRNA molecule binds. When this happens, the amino acids at the ends of the tRNA molecules are very close together, and a peptide bond forms. The mRNA then moves along again and the first tRNA molecule breaks away. This is translation.

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