bio 203 final exam Questions & Answers(GRADED A+)

bio 203 final exam Questions & Answers(GRADED A+) RNA polymerase - ANSWER pries the two strands of DNA apart and joins the RNA nucleotides as they base-pair along the DNA templates promoter - ANSWER DNA sequence where RNA polymerase attaches and initiates transcription Synthesis of RNA transcript - ANSWER initiation; elongation; termination synthesis of RNA transcript initiation - ANSWER after RNA polymerase binds to the promoter, the DNA strands unwind, and the polymerase initiates RNA synthesis at the start point of the template strand synthesis of RNA transcript elongation - ANSWER the polymerase moves downstream, unwinding DNA and elongating RNA transcript 5 to 3; in wake of transcription, the DNA strands reform a double helix transcription factors - ANSWER help eukaryotic RNA polymerase recognize promoter sequences 5 cap - ANSWER modified form of guanine is added onto the 5 end after transcription of the first 20-40 nucleotides poly-A tail - ANSWER at the 3 end, and enzyme adds 50-250 adenine nucleotides forming a tail RNA processing - ANSWER enzymes in the nucleus modify pre mRNA in specific ways