Do Now: Label the following: Sense strand Anti-sense strand

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IB Topics: DNA, Transcription, Translation

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Do Now: Label the following: Sense strand Anti-sense strand 5’ end of RNA 3’ end of RNA IB Topic 7.4- Translation

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Ribosome structure Made up of protein and rRNA Large subunit- made up of two molecules of rRNA and some proteins 2 binding sites for tRNA (A site and P site) Small subunit- made up of one molecule of rRNA and some proteins Binding site for mRNA

IB Topic 7.4- Translation Binding Sites A site: hold a tRNA carrying the next amino acid to be added to chain P site: hold the tRNA carrying the growing polypeptide chain E site: exit site

Other Translation terms to know Polysomes Ribosomes that are clustered together on the mRNA, creating several copies of the same polypeptide at the same time Start codons Found at the 5’ end of mRNA AUG Stop codons Translation stops- A site is not copied UAG, UAA, UGA

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