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AP Biology Protein Synthesis Flashcards

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6212168220TranscriptionProcess that converts DNA Nucleic Acid language into RNA Nucleic Acid language.0
6212168221RNA Structure• Ribose sugar. • Nitrogen bases: Uracil, Adenine, Cytosine, Guanine. • Single stranded.1
6212168222Types of RNA• mRNA • tRNA • rRNA • siRNA2
6212168223Template StrandTranscribed DNA strand; the strand of DNA that is temporarily paired with the RNA.3
6212168224Coding StrandUntranscribed DNA strand; same sequence as RNA.4
6212168225Transcription BubbleWhere DNA unzips for transcription to begin.5
6212168226RNA Polymerase IOnly transcribes rRNA genes; makes ribosomes.6
6212168227RNA Polymerase IITranscribes genes into mRNA.7
6212168228RNA Polymerase IIIOnly transcribes tRNA genes.8
6212168229Promoter RegionBinding site before beginning of gene; for RNA Polymerase and transcription factors.9
6212168230TATA Box Binding SiteA DNA sequence in eukaryotic promoters crucial in forming the transcription initiation complex.10
6212168231Enhancer RegionBinding site far upstream of gene. Turns transcription on HIGH.11
6212168232Initiation ComplexTranscription factors bind to promoter region. Trigger the binding of RNA Polymerase to DNA.12
6212168233ExonsThe real gene; expressed/coding DNA.13
6212168234IntronsThe junk genetic material; INbetween sequence.14
6212168235mRNA SplicingPost-transcriptional processing; edits out introns.15
6212168236Pre-mRNAPrimary transcript of the process.16
6212168237Mature mRNAThe final product of mRNA splicing.17
6212168238snRNPsSmall nuclear RNA; proteins. Responsible for splicing RNA.18
6212168239SpliceosomeSeveral snRNPs. Recognize splice site sequence. "Cut and paste" gene.19
6212168240Alternative SplicingAlternative mRNAs produced from same gene; different segments treated as exons.20
6212168241Post-Transcriptional ProcessingNeed to protect mRNA on its trip from nucleus to cytoplasm; enzymes in cytoplasm attack mRNA.21
6212168242mRNA Caps5' GTP Cap and Poly-A Tail; longer tail, mRNA lasts longer: produces more protein.22
6212168243Reading FrameReading mRNA nucleotides in the correct groupings. If a single base is added or lost, it throws off the entire reading frame.23
6212168244TranslationFrom nucleic acid language to amino acid language.24
6212168245CodonA sequence of three nucleotides in mRNA that codes for a specific amino acid.25
6212168246Start CodonsAUG and Methionine.26
6212168247Stop CodonsUGA, UAA, and UAG.27
6212168248Anti-CodonGroup of three bases on a tRNA molecule that are complementary to an mRNA codon.28
6212168249tRNATransfer RNA: follows its complementary codon, carries a specific attached amino acid.29
6212168250RibosomesFacilitate coupling of tRNA anticodon to mRNA codon. Organelle/enzyme hybrid.30
6212168251Structure of RibosomesRibosomal RNA (rRNA) and proteins. Large and small subunits.31
6212168252A SiteHolds tRNA carrying next amino acid to be added to chain.32
6212168253P SiteHolds tRNA carrying growing polypeptide chain.33
6212168254E SiteExit site. Empty tRNA leaves ribosome from exit side.34
6212168255InitiationBrings together mRNA, ribosome subunits, initiator tRNA.35
6212168256ElongationAdding amino acids based on codon sequence.36
6212168257TerminationEnd codon.37
6212168258Protein Synthesis in ProkaryotesTranslation and transcription coupled, translation begins before transcription is completed.38

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