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AP Biology Protein Synthesis Flashcards

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8537639123TranscriptionProcess that converts DNA Nucleic Acid language into RNA Nucleic Acid language.0
8537639124RNA Structure• Ribose sugar. • Nitrogen bases: Uracil, Adenine, Cytosine, Guanine. • Single stranded.1
8537639125Types of RNA• mRNA • tRNA • rRNA • siRNA2
8537639126Template StrandTranscribed DNA strand; the strand of DNA that is temporarily paired with the RNA.3
8537639127Coding StrandUntranscribed DNA strand; same sequence as RNA.4
8537639128Transcription BubbleWhere DNA unzips for transcription to begin.5
8537639129RNA Polymerase IOnly transcribes rRNA genes; makes ribosomes.6
8537639130RNA Polymerase IITranscribes genes into mRNA.7
8537639131RNA Polymerase IIIOnly transcribes tRNA genes.8
8537639132Promoter RegionBinding site before beginning of gene; for RNA Polymerase and transcription factors.9
8537639133TATA Box Binding SiteA DNA sequence in eukaryotic promoters crucial in forming the transcription initiation complex.10
8537639134Enhancer RegionBinding site far upstream of gene. Turns transcription on HIGH.11
8537639135Initiation ComplexTranscription factors bind to promoter region. Trigger the binding of RNA Polymerase to DNA.12
8537639136ExonsThe real gene; expressed/coding DNA.13
8537639137IntronsThe junk genetic material; INbetween sequence.14
8537639138mRNA SplicingPost-transcriptional processing; edits out introns.15
8537639139Pre-mRNAPrimary transcript of the process.16
8537639140Mature mRNAThe final product of mRNA splicing.17
8537639141snRNPsSmall nuclear RNA; proteins. Responsible for splicing RNA.18
8537639142SpliceosomeSeveral snRNPs. Recognize splice site sequence. "Cut and paste" gene.19
8537639143Alternative SplicingAlternative mRNAs produced from same gene; different segments treated as exons.20
8537639144Post-Transcriptional ProcessingNeed to protect mRNA on its trip from nucleus to cytoplasm; enzymes in cytoplasm attack mRNA.21
8537639145mRNA Caps5' GTP Cap and Poly-A Tail; longer tail, mRNA lasts longer: produces more protein.22
8537639146Reading FrameReading mRNA nucleotides in the correct groupings. If a single base is added or lost, it throws off the entire reading frame.23
8537639147TranslationFrom nucleic acid language to amino acid language.24
8537639148CodonA sequence of three nucleotides in mRNA that codes for a specific amino acid.25
8537639149Start CodonsAUG and Methionine.26
8537639150Stop CodonsUGA, UAA, and UAG.27
8537639151Anti-CodonGroup of three bases on a tRNA molecule that are complementary to an mRNA codon.28
8537639152tRNATransfer RNA: follows its complementary codon, carries a specific attached amino acid.29
8537639153RibosomesFacilitate coupling of tRNA anticodon to mRNA codon. Organelle/enzyme hybrid.30
8537639154Structure of RibosomesRibosomal RNA (rRNA) and proteins. Large and small subunits.31
8537639155A SiteHolds tRNA carrying next amino acid to be added to chain.32
8537639156P SiteHolds tRNA carrying growing polypeptide chain.33
8537639157E SiteExit site. Empty tRNA leaves ribosome from exit side.34
8537639158InitiationBrings together mRNA, ribosome subunits, initiator tRNA.35
8537639159ElongationAdding amino acids based on codon sequence.36
8537639160TerminationEnd codon.37
8537639161Protein Synthesis in ProkaryotesTranslation and transcription coupled, translation begins before transcription is completed.38

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