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genetic code

QuestionAnswer
Genetic code sequence of nucleotides in DNA Code contains instructions for the order &type of amino acids in polypeptide chain that will form a protein
3 types of rna Messenger RNA (mRNA) Ribosomal RNA (rRNA) Transfer RNA (tRNA)
Messenger RNA (mRNA) Rna molecle that transfers coded inforrmation from nucleus to ribosome Made in nucleus (transcription) & takes the genetic code for making protein to the ribosomes
Ribosomal RNA (rRNA) RNA molecule that form part of ribosomes (~60% of mass of a ribosome, other 40% - proteins) Ensures that correct alignment of mRNA, tRNA & ribosome rRNA also has an enzymatic role in the formation of peptide bonds between amino acids
Transfer RNA (tRNA) An rna molecule that brings amino acids from the cytoplasm to the ribosomes Small molecules of rna (70-90 nucleotides) & folded ‘clover-leaf’ structure
The role of dna is to store the instructions for making proteins. DNA is ‘read’ in sequence from 5’ennd to 3’end of molecule 3 bases = 1 amino acid
Created by: procrast
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