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AP Transcription and Translation Flashcards

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13171533091transcriptionprocess of copying DNA into mRNA0
13171533092Template StrandThis is the transcribed DNA strand, has directions1
131715330935' to 3'The direction RNA is built by RNA Polymerase2
131715330943' to 5'The direction RNA polymerase moves along the template strand of DNA3
13171533095RNA Polymerasemakes mRNA from DNA template4
13171533096Promoterbinding site for polymerase before beginning of gene5
13171533097Transcription FactorsProteins that bind to promoter region of DNA and help control transcription. Work with RNA polymerase.6
13171533098Initiation (Transcription)RNA polymerase binds to promoter of template strand of DNA7
13171533099Elongation (Transcription)RNA polymerase adds complimentary RNA nucleotides in 5' to 3' direction.8
13171533100Termination (Transcription)Termination sequence cause polymerase to detach from DNA, mRNA is released.9
13171533101ExonsA coding region of a eukaryotic gene. Exons, which are expressed10
13171533102IntronsNoncoding segments that are removed during RNA processing11
13171533103SpliceosomeThis enzyme complex is made of snRNPs, removes introns and pastes exons together12
13171533104Codonfound on mRNA, 3 nucleotides (3 bases) that code for 1 amino acid13
13171533105tRNAtransfers amino acids to the growing protein14
13171533106rRNAholds mRNA and tRNA together during protein synthesis15
13171533114The A, P, and E sites.3 locations on ribosome16
13171533107A SiteThis site locates the tRNA carrying next amino acid to be added to chain (3rd). Tests for codon/anticodon match.17
13171533108P SiteThis site holds tRNA as it drops off amino acid, building polypeptide chain.18
13171533109E SiteThe exit site where the empty tRNA leaves ribosomes.19
13171533110Initiation (Translation)mRNA, small and large ribosome sub-unit and first tRNA come together20
13171533111Elongation (Translation)Polypeptide increases in length as new amino acids keep getting added to protein.21
13171533112Termination (Translation)Release factor binds to stop codon on mRNA, polypeptide set free and forms 3D shape, ribosomes dissociate (aren't specific, ribsomes are general)22
13171533115TATApromoter region on DNA for transcription to begin23
13171533117AUGstart codon for translation24
13171533118UAA,UAG,UGAstop codons for translation25
13171543485Two main types of mutationspoint mutation & frameshift mutation26
13171546322Point Mutationchange in one base pair of a gene (substitution: replace one base with another)27
13171550265Three types/effects of point mutationssilent, missense, & nonsense28
13171553894Silent Mutationchanges one base, but codes for same amino acid29
13171556503Missense Mutationchange in one base codes for another amino acid (example: sickle cell disease)30
13171561828Nonsense Mutationchange in one base codes for a stop codon (makes nonfunctional protein that is terminated early)31
13171564361Frameshift Mutationmutation affects all nucleotides/codon groupings farther along DNA/RNA code32
131715681592 Types of frameshift mutationsinsertion and deletion33
13171572273Insertionadding extra nucleotides; causes frameshift unless multiple of 3 is added34
13171575568Deletionremoving nucleotides; causes frameshift unless multiple of 3 is removed35

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