- Transcription is the process that synthesizes messenger RNAs. - Insulin is a key hormone regulating the body's use and storage of glucose from the bloodstream. - The process flows from DNA strand - Transcription - RNA - Translation - Polypeptide. - Promoter sequences are located above a gene and promote transcription. Transcription of a gene process: - initiation - elongation - termination <u>Chapter 10</u> #RNA 4 types of RNA - mRNA(messenger) - takes in formation from DNA to ribosome - tRNA(transfer) - amino acids to ribosome - rRNA(ribosomal) - ribosomal RNA is part of the structure of the RNA - snRNA(small nuclear) - helps in splicing up of introns during RNA processing <u>Transcription</u> 1. imitation - small subunit of ribosome finds start codon on mRNA and binds to it - eRNA brings methionine amino aids and binds it to AUG-UAC codon - large subunit of ribosome binds to small subunit 2. Elongation - ribosome moves codon by codon and tRNA bring the specific amino acids making polypeptide chain 3. Termination - ribosome pauses at stop codon -> signal for termination - Polypeptide chain is released - RNA is released - Ribosome dissociates