KIN 270 Study Guide - Midterm Guide: Messenger Rna, Start Codon, Transfer Rna
Document Summary
Allow organisms to transfer genetic information from one generation to the next. 2 types of nucleic acids: dna and rna: dna: cytosine, guanine, adenine and thymine. A and t complimentary: rna: uracil instead of thymine. Mrna: messenger rna travels out through nuclear pores and dna is put back together trna: transfer rna contains only three nucleic acids, complementary to those found on the messenger. Rna: 60 different types of trna because each amino acid (20 of them) has 3 different codes. Start code, middle code, stop code: describe the initial formation of an amino acid chain (the polypeptide) as a result of transcription and translation in detail. Transcription: copying dna into messenger rna moving over the code (in nucleus) Codon: nucleic acids on messenger rna unit of three, same triplets that were on dna just changed name: matches to the complimentary sequence found on smaller pieces of rna called trna.