Protein Synthesis Part 3

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Presentation transcript:

Protein Synthesis Part 3 AP Biology Protein Synthesis Part 3

RNA plays multiple roles in the cell: Type of RNA Functions Messenger RNA (mRNA) Carries information specifying amino acid sequences of proteins from DNA to ribosomes Transfer RNA (tRNA) Serves as adapter molecule in protein synthesis; translates mRNA codons into amino acids Ribosomal RNA (rRNA) Plays catalytic (ribozyme) roles and structural roles in ribosomes

Type of RNA Functions Primary transcript Serves as a precursor to mRNA, rRNA, or tRNA, before being processed by splicing or cleavage Small nuclear RNA (snRNA) Plays structural and catalytic roles in spliceosomes SRP RNA Is a component of the the signal-recognition particle (SRP)

Type of RNA Functions Small nucleolar RNA (snoRNA) Aids in processing pre-rRNA transcripts for ribosome subunit formation in the nucleolus Small interfering RNA (siRNA) and microRNA (miRNA) Are involved in regulation of gene expression

Transcription & Translation Prokaryote vs. Eukaryote

Codon Chart, Yet again

Point Mutation (A single point is changed)

Reading Frame Mutations (Everything behind is changed)

Somatic vs. gametes (Who is affected?)

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