Biology 1002B Chapter Notes - Chapter 12+13: Precursor Mrna, Polyadenylation, Intron
2 May 2019
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12. 3a eukaryotic protein-coding genes are transcribed into precursor mrnas that are. Introns are removed by splicing: exons: amino acid-coding sequence that is retained in a spliced mrna. 12. 3b introns are removed during pre-mrna processing to produce translatable mrna: mrna splicing: process that removed introns and joins exons, spliceosomes: complex formed between the re- Mrna and small ribonucleoprotein particles: cleaves the pre-mrna -> release introns. + joins exons: small ribonucleoprotein particles: a complex of. 12. 4 translation: mrna-directed polypeptide synthesis: prokaryotic -> occurs in the cell, eukaryotic -> occurs in the cytoplasm. 12. 4a trnas are small rnas of a highly distinctive structure that bring amino acids to the. Ribosome: trna -> transfer rna, brings amino acids to the ribosomes, an base-pair with themselves, tip of the double-helical segment is an anticodon -> base pairs with a codon in. 12. 4b ribosomes are rrna-protein complexes that work as automated protein assembly.
