HLTB22H3 Chapter Notes - Chapter 21: Epigenome, Stop Codon, Severe Combined Immunodeficiency
Document Summary
Gene expression: ensures that genetic information is passed accurately from a parent cell to a daughter cell and from generation to generation. Rna synthesis: rna is the intermediary that carried information encoded in dna from the nucleus to the cytoplasm and directs the synthesis of the specified protein. Functions primarily in the cytoplasm: the first step in converting the dna message to a protein is to copy the message as. Rna, by a process called transcription: three types of rna. Ca(cid:396)(cid:396)ied dna"s i(cid:374)fo(cid:396)(cid:373)atio(cid:374) i(cid:374) the sequence of the bases (codons) from the nucleus to the cytoplasm. Binds specific amino acids and transports it to be added to a growing polypeptide chain. Combines with protein to form ribosomes (structures on which polypeptides are synthesized: unwinding/unzipping of a specific region of dna to be copied, one of the unwound dna strands serves as a template. Rna nucleotides present in the nucleus pair with the complementary base.
